Bug 1961794 (CVE-2021-33477)

Summary:	CVE-2021-33477 rxvt-unicode: possible remote code execution
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	amurdaca, andreas.bierfert, dcantrell, mtasaka, rharwood, terje.rosten
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-18 20:39:26 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:	1961795, 1961796, 1961797, 1961798
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2021-05-18 17:46:43 UTC

In rxvt-based terminals, ANSI escape sequence ESC G Q (\eGQ, \033GQ, \x1bGQ) queries the availability of graphics and the response is received from stdin. However, rxvt responds to the query with a newline-terminated message, which is retarded and exposes goatse-wide gaping security holes in many popular CLI programs when executed inside an rxvt terminal window.

Reference:
https://www.openwall.com/lists/oss-security/2021/05/17/1

Comment 1 Guilherme de Almeida Suckevicz 2021-05-18 17:47:16 UTC

Created eterm tracking bugs for this issue:

Affects: fedora-all [bug 1961798]


Created mrxvt tracking bugs for this issue:

Affects: fedora-all [bug 1961796]


Created rxvt-unicode tracking bugs for this issue:

Affects: epel-all [bug 1961797]
Affects: fedora-all [bug 1961795]

Comment 2 Product Security DevOps Team 2021-05-18 20:39:26 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.