A pre-auth command injection vulnerability in the warn-proceed handler of Sophos Web Appliance older than version 4.3.10.4 allows execution
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 4.3.10.4
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The Sophos Web Appliance is affected by this vulnerability, which can be exploited without logging in. Successful exploitation would allow an attacker to run arbitrary code on the affected appliance.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A pre-auth command injection vulnerability in the warn-proceed handler of Sophos Web Appliance older than version 4.3.10.4 allows execution of arbitrary code.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- Sophos Sophos Web Appliance
From unspecified · fixed in 4.3.10.4
References 2
packetstormsecurity.com
Questions about CVE-2023-1671
What does this mean?
A command injection flaw in the warn-proceed handler lets code run on the appliance without logging in. The advisory describes the impact as execution of arbitrary code on the appliance.Source: sophos.com
Am I affected, and how do I check?
Sophos Web Appliance versions older than 4.3.10.4 are affected. To check, compare the installed version against 4.3.10.4.Source: sophos.com
What should I do about it?
Upgrade Sophos Web Appliance to 4.3.10.4, the release that fixes this issue. No workaround is listed in the facts.Source: sophos.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2023-11-16, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data