CVE-2022-35206

Publication date 22 August 2023

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

Null pointer dereference vulnerability in Binutils readelf 2.38.50 via function read_and_display_attr_value in file dwarf.c.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
binutils	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

seth-arnold

binutils isn't safe for untrusted inputs.

according to the patch referenced in the issue, the dereference happens when the 'debug_info_p' variable is referenced but not set in a 'fetch_indexed_string' call, in 'read_and_display_attr_value'. In bionic and earlier, these specific calls (referenced in the patch) are not made sending 'debug_info_p' as an argument.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
binutils	Upstream: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e98e7d9a70dcc987bff0e925f20b78cd4a2979ed

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H