Red Hat Enterprise Linux 7 Extended Lifecycle Support update for tigervnc



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-9632
CWE-ID CWE-122
Exploitation vector Local
Public exploit N/A
Vulnerable software
 tigervnc (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU99493

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-9632

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the XkbSetCompatMap() function in xkb/xkb.c. A local user can pass a specially crafted bitmap to the X.Org server, trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

tigervnc (Red Hat package): before 1.8.0-34.el7_9

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2024:9901


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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