Bug 2042017 (CVE-2022-23219)

Summary:	CVE-2022-23219 glibc: Stack-based buffer overflow in sunrpc clnt_create via a long pathname
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aoliva, arjun.is, ashankar, bdettelb, caswilli, codonell, dj, dkuc, fjansen, fweimer, ggastald, glibc-bugzilla, jburrell, jwong, kaycoth, law, mcermak, mfabian, micjohns, mnewsome, pfrankli, psegedy, rth, sbiarozk, sipoyare, sthirugn, tcarlin, tcrider, tkasparek, tsasak, vkrizan, vkumar, vmugicag, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A stack based buffer-overflow vulnerability was found in the deprecated compatibility function clnt_create() in the sunrpc's clnt_gen.c module of the GNU C Library (aka glibc) through 2.34. This vulnerability copies its hostname argument onto the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) lead to arbitrary code execution.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-05-04 01:45:58 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2042018, 2045062, 2045063, 2045251, 2046028, 2046693, 2071032
Bug Blocks:	2042019

Description Guilherme de Almeida Suckevicz 2022-01-18 17:13:45 UTC

The deprecated compatibility function clnt_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its hostname argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution.

Reference:
https://sourceware.org/bugzilla/show_bug.cgi?id=22542

Comment 1 Guilherme de Almeida Suckevicz 2022-01-18 17:14:04 UTC

Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 2042018]

Comment 13 errata-xmlrpc 2022-03-15 10:22:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:0896 https://access.redhat.com/errata/RHSA-2022:0896

Comment 15 Product Security DevOps Team 2022-05-04 01:45:54 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-23219