Out-of-Bounds Affecting openssl package, versions <1:3.0.7-16.el9_2


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.11% (47th percentile)

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  • Snyk IDSNYK-RHEL9-OPENSSL-5732188
  • published21 Apr 2023
  • disclosed20 Apr 2023

Introduced: 20 Apr 2023

CVE-2023-1255  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade RHEL:9 openssl to version 1:3.0.7-16.el9_2 or higher.
This issue was patched in RHSA-2023:3722.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

Issue summary: The AES-XTS cipher decryption implementation for 64 bit ARM platform contains a bug that could cause it to read past the input buffer, leading to a crash.

Impact summary: Applications that use the AES-XTS algorithm on the 64 bit ARM platform can crash in rare circumstances. The AES-XTS algorithm is usually used for disk encryption.

The AES-XTS cipher decryption implementation for 64 bit ARM platform will read past the end of the ciphertext buffer if the ciphertext size is 4 mod 5 in 16 byte blocks, e.g. 144 bytes or 1024 bytes. If the memory after the ciphertext buffer is unmapped, this will trigger a crash which results in a denial of service.

If an attacker can control the size and location of the ciphertext buffer being decrypted by an application using AES-XTS on 64 bit ARM, the application is affected. This is fairly unlikely making this issue a Low severity one.

CVSS Scores

version 3.1