Vulnerability in Veeam Backup & Replication component allows encrypted credentials stored in the configuration database to be obtained.
All previous Veeam Backup & Replication versions are affected when Veeam.Backup.Service.exe on default TCP 9401 is reachable by unauthenticated users. The vendor lists fixed builds by number, and the fix is in those builds.
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- 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
Veeam Backup & Replication is affected by a flaw that allows an attacker to obtain encrypted credentials stored in its configuration database. This could allow the attacker to gain access to the backup infrastructure hosts.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Vulnerability in Veeam Backup & Replication component allows encrypted credentials stored in the configuration database to be obtained. This may lead to gaining access to the backup infrastructure hosts.
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
- n/a Veeam Backup & Replication
Fixed Versions: v12 (build 12.0.0.1420 P20230223), 11a (build 11.0.1.1261 P20230227)
References 1
veeam.com
Questions about CVE-2023-27532
What does this mean?
The flaw lets an unauthenticated user reach Veeam.Backup.Service.exe on TCP 9401 and request encrypted credentials stored in the configuration database. The advisory says this may lead to access to the backup infrastructure hosts.Source: veeam.com
Am I affected, and how do I check?
The advisory states that all previous Veeam Backup & Replication versions are affected, until the fixed builds are installed. The exposure depends on the Veeam.Backup.Service.exe service listening on TCP 9401, the default port, and being reachable from the network. Check the installed build number in the Veeam console and whether TCP 9401 is reachable from outside the backup server.Source: veeam.com
What should I do about it?
Upgrade to a Veeam Backup & Replication build at or above the fixed build number the advisory lists for the release line in use. The checked facts do not include the specific build numbers.Source: veeam.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2023-08-22, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data
What if there's no patch?
Block external connections to TCP 9401 in the backup server firewall. The advisory gives this workaround for an all-in-one appliance with no remote backup infrastructure components.Source: veeam.com