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Vulnerability · Published May 20, 2021 · Assigned by mitre

CVE-2021-33477

High 8.8

In plain English

A high-severity security flaw in the mrxvt package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.1% (higher than 91% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)8.8High
Exploit odds (30 days)4.1%top 9.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20mrxvt0.5.4-r9ALPINE-CVE-2021-33477
Alpine:v3.21mrxvt0.5.4-r9ALPINE-CVE-2021-33477
Alpine:v3.22mrxvt0.5.4-r9ALPINE-CVE-2021-33477
Alpine:v3.23mrxvt0.5.4-r9ALPINE-CVE-2021-33477
Alpine:v3.24mrxvt0.5.4-r9ALPINE-CVE-2021-33477
Alpine:v3.20rxvt-unicode9.26-r0ALPINE-CVE-2021-33477
Alpine:v3.21rxvt-unicode9.26-r0ALPINE-CVE-2021-33477
Alpine:v3.22rxvt-unicode9.26-r0ALPINE-CVE-2021-33477
Alpine:v3.23rxvt-unicode9.26-r0ALPINE-CVE-2021-33477
Alpine:v3.24rxvt-unicode9.26-r0ALPINE-CVE-2021-33477
Debian:12eterm0.9.6-6.1DEBIAN-CVE-2021-33477
Debian:14eterm0.9.6-6.1DEBIAN-CVE-2021-33477
Debian:12rxvt-unicode9.22-11DEBIAN-CVE-2021-33477
Debian:13rxvt-unicode9.22-11DEBIAN-CVE-2021-33477
Debian:14rxvt-unicode9.22-11DEBIAN-CVE-2021-33477

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References