CVE-2020-1751

Publication date 17 April 2020

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
eglibc	20.04 LTS focal	Not in release
	19.10 eoan	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Ignored end of ESM support, was ignored [out of support]
glibc	20.04 LTS focal	Not affected
	19.10 eoan	Fixed 2.30-0ubuntu2.2
	18.04 LTS bionic	Fixed 2.27-3ubuntu1.2
	16.04 LTS xenial	Fixed 2.23-0ubuntu11.2
	14.04 LTS trusty	Not in release

Notes

leosilva

-esm releases only supports amd64 arch

mdeslaur

introduced in https://sourceware.org/git/?p=glibc.git;a=commit;h=d400dcac5e

Patch details

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

Package	Patch details
glibc	Upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d93769405996dfc11d216ddbe415946617b5a494

Severity score breakdown

Parameter	Value
Base score	7.0 · High
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H