Vulnerability CVE-2021-33477
Published: 2021-05-20

Description:
rxvt-unicode 9.22, rxvt 2.7.10, mrxvt 0.5.4, and Eterm 0.9.7 allow (potentially remote) code execution because of improper handling of certain escape sequences (ESC G Q). A response is terminated by a newline.

Type:

CWE-755

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.5/10
6.4/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Rxvt project -> RXVT 
Rxvt-unicode project -> Rxvt-unicode 
Mrxvt project -> Mrxvt 
Eterm project -> Eterm 

 References:
https://git.enlightenment.org/apps/eterm.git/log/
https://www.openwall.com/lists/oss-security/2017/05/01/20
https://sourceforge.net/projects/rxvt/files/rxvt-dev/
http://cvs.schmorp.de/rxvt-unicode/src/command.C?r1=1.582&r2=1.583
https://www.openwall.com/lists/oss-security/2021/05/17/1
https://packetstormsecurity.com/files/162621/rxvt-2.7.0-rxvt-unicode-9.22-Code-Execution.html
https://sourceforge.net/projects/materm/files/mrxvt%20source/
http://cvs.schmorp.de/rxvt-unicode/Changes?view=log
https://security.gentoo.org/glsa/202105-17
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