CVE-2024-31082
A heap-based buffer over-read vulnerability was found in the X.org server's ProcAppleDRICreatePixmap() function.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A heap-based buffer over-read vulnerability was found in the X.org server's ProcAppleDRICreatePixmap() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.
- CVSS 3.1
- 7.3 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
- EPSS
- 0.34% probability · 27th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-126
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2024-31082
- https://bugzilla.redhat.com/show_bug.cgi?id=2271999
- https://lists.x.org/archives/xorg-announce/2024-April/003497.html
- http://www.openwall.com/lists/oss-security/2024/04/03/13
- http://www.openwall.com/lists/oss-security/2024/04/12/10
- https://access.redhat.com/security/cve/CVE-2024-31082
- https://bugzilla.redhat.com/show_bug.cgi?id=2271999
- https://lists.x.org/archives/xorg-announce/2024-April/003497.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.