821517 – (CVE-2021-27836) dev-libs/libxls: null pointer dereferences

Bug 821517 (CVE-2021-27836) - dev-libs/libxls: null pointer dereferences

Summary: dev-libs/libxls: null pointer dereferences

Status:	CONFIRMED

Alias:	CVE-2021-27836

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal minor (vote)
Assignee:	Gentoo Security

URL:	https://github.com/libxls/libxls/issu...
Whiteboard:	B3 [upstream]
Keywords:

Depends on:
Blocks:

Reported:	2021-11-03 19:17 UTC by John Helmert III
Modified:	2021-11-03 19:17 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description John Helmert III archtester

2021-11-03 19:17:14 UTC

CVE-2021-27836:

An issue was discoverered in in function xls_getWorkSheet in xls.c in libxls 1.6.2, allows attackers to cause a denial of service, via a crafted XLS file.

Three PRs listed in the issue:

https://github.com/libxls/libxls/pull/95
https://github.com/libxls/libxls/pull/96
https://github.com/libxls/libxls/pull/97

Only the first two are merged, but they're merged into dev and are
unreleased.