CVE-2023-43826
Apache Guacamole 1.5.3 and older do not consistently ensure that values received from a VNC server will not result in integer overflow.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Apache Guacamole 1.5.3 and older do not consistently ensure that values received from a VNC server will not result in integer overflow. If a user connects to a malicious or compromised VNC server, specially-crafted data could result in memory corruption, possibly allowing arbitrary code to be executed with the privileges of the running guacd process. Users are recommended to upgrade to version 1.5.4, which fixes this issue.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.89% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- apache/guacamole
- Source
- security@apache.org
References
- http://www.openwall.com/lists/oss-security/2023/12/19/4Mailing List, Third Party Advisory
- https://lists.apache.org/thread/23gzwftpfgtq97tj6ttmbclry53kmwv6Mailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2023/12/19/4Mailing List, Third Party Advisory
- https://lists.apache.org/thread/23gzwftpfgtq97tj6ttmbclry53kmwv6Mailing List, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.