High severity · published May 20, 2021
CVE-2021-33477
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)
8.8
CVSS
4.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.1% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0 · source: NVD
ET
Eterm · Eterm Project
0.9.7 · source: NVD
FE
Fedora · Fedoraproject
33; 34 · source: NVD
MR
Mrxvt · Mrxvt Project
0.5.4 · source: NVD
RX
Rxvt · Rxvt Project
2.7.10 · source: NVD
RX
Rxvt-unicode · Rxvt-unicode Project
9.22 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33477
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33477
Third Party Advisory
http://cvs.schmorp.de/rxvt-unicode/Changes?view=log
Patch
http://cvs.schmorp.de/rxvt-unicode/src/command.C?r1=1.582&r2=1.583
Third Party Advisory
https://git.enlightenment.org/apps/eterm.git/log/
Mailing List
https://lists.debian.org/debian-lts-announce/2021/05/msg00026.html
Mailing List
https://lists.debian.org/debian-lts-announce/2021/06/msg00010.html
Mailing List
https://lists.debian.org/debian-lts-announce/2021/06/msg00011.html
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