Symantec Messaging Gateway Remote Code Execution Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
• EPSS: 36% chance of exploitation in the next 30 days (higher than 98% of CVEs)

[ Description ]Official description

The Symantec Messaging Gateway before 10.6.3-267 can encounter an issue of remote code execution, which describes a situation whereby an individual may obtain the ability to execute commands remotely on a target machine or in a target process. In this type of occurrence, after gaining access to the system, the attacker may attempt to elevate their privileges.

CISA: Symantec Messaging Gateway contains an unspecified vulnerability which can allow for remote code execution. With the ability to perform remote code execution, an attacker may also desire to perform privilege escalating actions.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 May 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• seclists.org/fulldisclosure/2017/Aug/28Mailing ListThird Party Advisory
• www.securityfocus.com/bid/100135Broken LinkThird Party AdvisoryVDB Entry
• www.exploit-db.com/exploits/42519Third Party AdvisoryVDB Entry
• www.symantec.com/security_response/securityupdates/detail.jspVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource