Buffer Over-read Affecting tigervnc-icons package, versions <0:1.13.1-10.el8_10


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-ORACLE8-TIGERVNCICONS-6674009
  • published26 Apr 2024
  • disclosed4 Apr 2024

Introduced: 4 Apr 2024

CVE-2024-31080  (opens in a new tab)
CWE-126  (opens in a new tab)

How to fix?

Upgrade Oracle:8 tigervnc-icons to version 0:1.13.1-10.el8_10 or higher.
This issue was patched in ELSA-2024-3261.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc-icons package and not the tigervnc-icons package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIGetSelectedEvents() 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.

References

CVSS Scores

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