CVE-2023-27532

Veeam Backup & Replication: Cloud Connect Missing Authentication for Critical Function

As of , CVE-2023-27532 in Veeam Backup & Replication is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 22 August 2023
US federal deadline
12 September 202321 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Known
EPSS score
0.81Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.00 on 22 August 2023EPSS on the day CISA listed it.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
Vendor advice: www.veeam.comLinks below, from CISA's entry.

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA's required action

What the flaw is

Veeam Backup & Replication Cloud Connect component contains a missing authentication for critical function vulnerability that allows an unauthenticated user operating within the backup infrastructure network perimeter to obtain encrypted credentials stored in the configuration database. This may lead to an attacker gaining access to the backup infrastructure hosts.

CISA's 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.

The CVE record's description, from hackerone

CVE published
10 March 2023
Assigned by
hackerone
CVSS
7.5 High (CVSS 3.1, from CISA-ADP)
CWE-306
Missing Authentication for Critical Function
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
partial

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Backup & Replication: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2024-40711Backup and Replication DeserializationVeeam Backup & ReplicationPatch this weekRansomware use; EPSS 0.900.90
CVE-2022-26500Remote Code ExecutionVeeam Backup & ReplicationPatch this weekRansomware use0.06
CVE-2022-26501Remote Code ExecutionVeeam Backup & ReplicationPatch this weekRansomware use0.04

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