ID

VAR-202109-1803

CVE

CVE-2021-39275

TITLE

Apache HTTP Server ap_escape_quotes Buffer Overflow Vulnerability

DESCRIPTION

ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier. The server is fast, reliable and extensible through a simple API. An attacker could exploit this vulnerability to write malicious content and execute it. 7) - noarch, x86_64 3. Bug Fix(es): * proxy rewrite to unix socket fails with CVE-2021-40438 fix (BZ#2022319) Additional changes: * To fix CVE-2022-29404, the default value for the "LimitRequestBody" directive in the Apache HTTP Server has been changed from 0 (unlimited) to 1 GiB. On systems where the value of "LimitRequestBody" is not explicitly specified in an httpd configuration file, updating the httpd package sets "LimitRequestBody" to the default value of 1 GiB. As a consequence, if the total size of the HTTP request body exceeds this 1 GiB default limit, httpd returns the 413 Request Entity Too Large error code. If the new default allowed size of an HTTP request message body is insufficient for your use case, update your httpd configuration files within the respective context (server, per-directory, per-file, or per-location) and set your preferred limit in bytes. For example, to set a new 2 GiB limit, use: LimitRequestBody 2147483648 Systems already configured to use any explicit value for the "LimitRequestBody" directive are unaffected by this change. For the oldstable distribution (buster), these problems have been fixed in version 2.4.38-3+deb10u6. For the stable distribution (bullseye), these problems have been fixed in version 2.4.51-1~deb11u1. We recommend that you upgrade your apache2 packages. For the detailed security status of apache2 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/apache2 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEtuYvPRKsOElcDakFEMKTtsN8TjYFAmFgr44ACgkQEMKTtsN8 TjbophAAiZ+fhF2r8BUbQkL8BhpfqjA+hVsp9WEMTn8Gq6kiW0wLvK3jWPM301Ou D4gHqKmFPmYNC1KBOyk/lJdxyD7iTUweUyLi3WXzxhIDMx0kxkRw1oXlyCHzIqSJ M277bgk32h2cDCbsXjrN/8agKPcKgfwDqiyf/igfEq6V8OB2zVvJPKVFq45n54+q 4FPXSyx1g2u5ewSeXbU2uHDej6Qborui4osDdbwx8CT6aETi0cIXJ8RbXF3PUCHG 5DzZagnRq6GumPsl01jcPu7b9Ck8MlkxMSG3FRsSIJVkwpsQ2C34ywIJkFlzUZZh jhdVUrfbyfLpSdcPcipAAjl9I6gDqa9SFdMRK7ixCpQ6iTiVeDZdJ8pA4jnSweNQ THik07di9R0juX0p7peQiIyBKrEf7Y3WSvLOn0SBKXvZnzc/72rH2nP5FclsgCsV TWxptziGridC43KB8/tDJAAOXVF2lzylzF70V/UGTNo1jk9w3/p6btU1iuzKspyY Y4aPZla3DImI8mezrgFrGYNg7bZYLKuJyGDADKih2sUQpzmDZ6MJxKAE3NLRWyQa 7cCJdoNR9yVqytEw1Y/ZRXAXWfMb3Y1ts2EqR8hzLQgMYb0JC58cLMG3T0RgyPoO A4CTIoYpK1WnsykAE8M4XFrnOW3lrtse6T8N/dTVMuodElAEhc0= =/At6 -----END PGP SIGNATURE----- . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: httpd security update Advisory ID: RHSA-2022:0143-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:0143 Issue date: 2022-01-17 CVE Names: CVE-2021-26691 CVE-2021-34798 CVE-2021-39275 CVE-2021-44790 ==================================================================== 1. Summary: An update for httpd is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Security Fix(es): * httpd: mod_lua: Possible buffer overflow when parsing multipart content (CVE-2021-44790) * httpd: mod_session: Heap overflow via a crafted SessionHeader value (CVE-2021-26691) * httpd: NULL pointer dereference via malformed requests (CVE-2021-34798) * httpd: Out-of-bounds write in ap_escape_quotes() via malicious input (CVE-2021-39275) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the updated packages, the httpd daemon will be restarted automatically. 5. Bugs fixed (https://bugzilla.redhat.com/): 1966732 - CVE-2021-26691 httpd: mod_session: Heap overflow via a crafted SessionHeader value 2005119 - CVE-2021-39275 httpd: Out-of-bounds write in ap_escape_quotes() via malicious input 2005128 - CVE-2021-34798 httpd: NULL pointer dereference via malformed requests 2034674 - CVE-2021-44790 httpd: mod_lua: Possible buffer overflow when parsing multipart content 6. Package List: Red Hat Enterprise Linux Client Optional (v. 7): Source: httpd-2.4.6-97.el7_9.4.src.rpm noarch: httpd-manual-2.4.6-97.el7_9.4.noarch.rpm x86_64: httpd-2.4.6-97.el7_9.4.x86_64.rpm httpd-debuginfo-2.4.6-97.el7_9.4.x86_64.rpm httpd-devel-2.4.6-97.el7_9.4.x86_64.rpm httpd-tools-2.4.6-97.el7_9.4.x86_64.rpm mod_ldap-2.4.6-97.el7_9.4.x86_64.rpm mod_proxy_html-2.4.6-97.el7_9.4.x86_64.rpm mod_session-2.4.6-97.el7_9.4.x86_64.rpm mod_ssl-2.4.6-97.el7_9.4.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): Source: httpd-2.4.6-97.el7_9.4.src.rpm noarch: httpd-manual-2.4.6-97.el7_9.4.noarch.rpm x86_64: httpd-2.4.6-97.el7_9.4.x86_64.rpm httpd-debuginfo-2.4.6-97.el7_9.4.x86_64.rpm httpd-devel-2.4.6-97.el7_9.4.x86_64.rpm httpd-tools-2.4.6-97.el7_9.4.x86_64.rpm mod_ldap-2.4.6-97.el7_9.4.x86_64.rpm mod_proxy_html-2.4.6-97.el7_9.4.x86_64.rpm mod_session-2.4.6-97.el7_9.4.x86_64.rpm mod_ssl-2.4.6-97.el7_9.4.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: httpd-2.4.6-97.el7_9.4.src.rpm noarch: httpd-manual-2.4.6-97.el7_9.4.noarch.rpm ppc64: httpd-2.4.6-97.el7_9.4.ppc64.rpm httpd-debuginfo-2.4.6-97.el7_9.4.ppc64.rpm httpd-devel-2.4.6-97.el7_9.4.ppc64.rpm httpd-tools-2.4.6-97.el7_9.4.ppc64.rpm mod_session-2.4.6-97.el7_9.4.ppc64.rpm mod_ssl-2.4.6-97.el7_9.4.ppc64.rpm ppc64le: httpd-2.4.6-97.el7_9.4.ppc64le.rpm httpd-debuginfo-2.4.6-97.el7_9.4.ppc64le.rpm httpd-devel-2.4.6-97.el7_9.4.ppc64le.rpm httpd-tools-2.4.6-97.el7_9.4.ppc64le.rpm mod_session-2.4.6-97.el7_9.4.ppc64le.rpm mod_ssl-2.4.6-97.el7_9.4.ppc64le.rpm s390x: httpd-2.4.6-97.el7_9.4.s390x.rpm httpd-debuginfo-2.4.6-97.el7_9.4.s390x.rpm httpd-devel-2.4.6-97.el7_9.4.s390x.rpm httpd-tools-2.4.6-97.el7_9.4.s390x.rpm mod_session-2.4.6-97.el7_9.4.s390x.rpm mod_ssl-2.4.6-97.el7_9.4.s390x.rpm x86_64: httpd-2.4.6-97.el7_9.4.x86_64.rpm httpd-debuginfo-2.4.6-97.el7_9.4.x86_64.rpm httpd-devel-2.4.6-97.el7_9.4.x86_64.rpm httpd-tools-2.4.6-97.el7_9.4.x86_64.rpm mod_session-2.4.6-97.el7_9.4.x86_64.rpm mod_ssl-2.4.6-97.el7_9.4.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: httpd-debuginfo-2.4.6-97.el7_9.4.ppc64.rpm mod_ldap-2.4.6-97.el7_9.4.ppc64.rpm mod_proxy_html-2.4.6-97.el7_9.4.ppc64.rpm ppc64le: httpd-debuginfo-2.4.6-97.el7_9.4.ppc64le.rpm mod_ldap-2.4.6-97.el7_9.4.ppc64le.rpm mod_proxy_html-2.4.6-97.el7_9.4.ppc64le.rpm s390x: httpd-debuginfo-2.4.6-97.el7_9.4.s390x.rpm mod_ldap-2.4.6-97.el7_9.4.s390x.rpm mod_proxy_html-2.4.6-97.el7_9.4.s390x.rpm x86_64: httpd-debuginfo-2.4.6-97.el7_9.4.x86_64.rpm mod_ldap-2.4.6-97.el7_9.4.x86_64.rpm mod_proxy_html-2.4.6-97.el7_9.4.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: httpd-2.4.6-97.el7_9.4.src.rpm noarch: httpd-manual-2.4.6-97.el7_9.4.noarch.rpm x86_64: httpd-2.4.6-97.el7_9.4.x86_64.rpm httpd-debuginfo-2.4.6-97.el7_9.4.x86_64.rpm httpd-devel-2.4.6-97.el7_9.4.x86_64.rpm httpd-tools-2.4.6-97.el7_9.4.x86_64.rpm mod_session-2.4.6-97.el7_9.4.x86_64.rpm mod_ssl-2.4.6-97.el7_9.4.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: httpd-debuginfo-2.4.6-97.el7_9.4.x86_64.rpm mod_ldap-2.4.6-97.el7_9.4.x86_64.rpm mod_proxy_html-2.4.6-97.el7_9.4.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2021-26691 https://access.redhat.com/security/cve/CVE-2021-34798 https://access.redhat.com/security/cve/CVE-2021-39275 https://access.redhat.com/security/cve/CVE-2021-44790 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2022 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYeVdC9zjgjWX9erEAQgzNw/8CjsxUvDW64dwvpcYH/OWJhKqvD53sX+w ivf4+hhCsEVLvrjD0eTNkbeza+dcZqoR5swL0IjAGXKJ/0q/oh4/yxq2ydgvEYsY rAjts0tnynoswBaFo6eaBlcNxQroGID0uqgXkUFt37m4eetACuOSVRcZ7/sNsqBS iQF4l16vjNvKeOdKY8nSNe77Dt1/Lj41NoL6XbAZPuvaiLBqqGOY9xYfZSSmFHFq H4dB8cfMC4cWysFtnzffJ+dJdzcWNOxklwLlZe72JoAJYP59da2YuIoE2LsQRGPC Occ84zH/UZx4JWJhF7FEEALC/tizfFqu9qWr1OIDmSVTEAZ+6IZ/mDeF83+0Mrc4 AiV3oiJi7Fx4XTDUL8fim+FORaSI2IR7LK1Zjau1qCN04ayyFXwJdK/fwgIWJHon gYhyUsAj7F7At9m8cCVRP5K4jjmr0qrmsF1M1B6xqMLWlYNcWu3obJS/FbiSdwQJ 7jFdBagThGOzIle0eGk0iMZ+vRJSuaSMZ7GDA14o46KB+EkvYLe+wi6jBQXJeD6Q Oueenu2JiMvB8+dJNYrn9uQY+8WHyCVV1HMMmVo9LajA1FJRXgMIQN5ZmDMoDW73 qFV+VCOHtKPI2hC8ngZYy2RyEUhK4t3f7xmJgtoJ4/DuaGsRWL7xZPL7gLHxWnS4 5VjPyLrWg5U=TyMo -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . 8) - aarch64, noarch, ppc64le, s390x, x86_64 3. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.51 serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.37 Service Pack 10, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202208-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: Apache HTTPD: Multiple Vulnerabilities Date: August 14, 2022 Bugs: #813429, #816399, #816864, #829722, #835131, #850622 ID: 202208-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= Multiple vulnerabilities have been discovered in Apache Webserver, the worst of which could result in remote code execution. Please review the CVE identifiers referenced below for details. Impact ===== Please review the referenced CVE identifiers for details. Workaround ========= There is no known workaround at this time. Resolution ========= All Apache HTTPD users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=www-servers/apache-2.4.54" All Apache HTTPD tools users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-admin/apache-tools-2.4.54" References ========= [ 1 ] CVE-2021-33193 https://nvd.nist.gov/vuln/detail/CVE-2021-33193 [ 2 ] CVE-2021-34798 https://nvd.nist.gov/vuln/detail/CVE-2021-34798 [ 3 ] CVE-2021-36160 https://nvd.nist.gov/vuln/detail/CVE-2021-36160 [ 4 ] CVE-2021-39275 https://nvd.nist.gov/vuln/detail/CVE-2021-39275 [ 5 ] CVE-2021-40438 https://nvd.nist.gov/vuln/detail/CVE-2021-40438 [ 6 ] CVE-2021-41524 https://nvd.nist.gov/vuln/detail/CVE-2021-41524 [ 7 ] CVE-2021-41773 https://nvd.nist.gov/vuln/detail/CVE-2021-41773 [ 8 ] CVE-2021-42013 https://nvd.nist.gov/vuln/detail/CVE-2021-42013 [ 9 ] CVE-2021-44224 https://nvd.nist.gov/vuln/detail/CVE-2021-44224 [ 10 ] CVE-2021-44790 https://nvd.nist.gov/vuln/detail/CVE-2021-44790 [ 11 ] CVE-2022-22719 https://nvd.nist.gov/vuln/detail/CVE-2022-22719 [ 12 ] CVE-2022-22720 https://nvd.nist.gov/vuln/detail/CVE-2022-22720 [ 13 ] CVE-2022-22721 https://nvd.nist.gov/vuln/detail/CVE-2022-22721 [ 14 ] CVE-2022-23943 https://nvd.nist.gov/vuln/detail/CVE-2022-23943 [ 15 ] CVE-2022-26377 https://nvd.nist.gov/vuln/detail/CVE-2022-26377 [ 16 ] CVE-2022-28614 https://nvd.nist.gov/vuln/detail/CVE-2022-28614 [ 17 ] CVE-2022-28615 https://nvd.nist.gov/vuln/detail/CVE-2022-28615 [ 18 ] CVE-2022-29404 https://nvd.nist.gov/vuln/detail/CVE-2022-29404 [ 19 ] CVE-2022-30522 https://nvd.nist.gov/vuln/detail/CVE-2022-30522 [ 20 ] CVE-2022-30556 https://nvd.nist.gov/vuln/detail/CVE-2022-30556 [ 21 ] CVE-2022-31813 https://nvd.nist.gov/vuln/detail/CVE-2022-31813 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202208-20 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ====== Copyright 2022 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5 . ========================================================================== Ubuntu Security Notice USN-5090-1 September 27, 2021 apache2 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in Apache HTTP Server. A remote attacker could possibly use this issue to perform request splitting or cache poisoning attacks. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. (CVE-2021-34798) Li Zhi Xin discovered that the Apache mod_proxy_uwsgi module incorrectly handled certain request uri-paths. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 21.04. If the server was configured with third-party modules, a remote attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-39275) It was discovered that the Apache mod_proxy module incorrectly handled certain request uri-paths. A remote attacker could possibly use this issue to cause the server to forward requests to arbitrary origin servers. (CVE-2021-40438) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: apache2 2.4.46-4ubuntu1.2 apache2-bin 2.4.46-4ubuntu1.2 Ubuntu 20.04 LTS: apache2 2.4.41-4ubuntu3.5 apache2-bin 2.4.41-4ubuntu3.5 Ubuntu 18.04 LTS: apache2 2.4.29-1ubuntu4.17 apache2-bin 2.4.29-1ubuntu4.17 In general, a standard system update will make all the necessary changes

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

buffer error

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Siemens reported these vulnerabilities to CISA.

SOURCES

LAST UPDATE DATE

2025-05-17T19:55:28.292000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE