Bug 1961794 (CVE-2021-33477) - CVE-2021-33477 rxvt-unicode: possible remote code execution
Summary: CVE-2021-33477 rxvt-unicode: possible remote code execution
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-33477
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1961795 1961796 1961797 1961798
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-05-18 17:46 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-05-21 16:37 UTC (History)
6 users (show)

Fixed In Version:
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Last Closed: 2021-05-18 20:39:26 UTC
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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.
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