Use of Externally-Controlled Format String Affecting exim4 package, versions <4.75-3


Severity

Recommended
0.0
high
0
10

Based on Debian security rating.

Threat Intelligence

EPSS
9.72% (96th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Use of Externally-Controlled Format String vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-DEBIAN10-EXIM4-382945
  • published5 Oct 2011
  • disclosed5 Oct 2011

Introduced: 5 Oct 2011

CVE-2011-1764  (opens in a new tab)
CWE-134  (opens in a new tab)

How to fix?

Upgrade Debian:10 exim4 to version 4.75-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream exim4 package and not the exim4 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

Format string vulnerability in the dkim_exim_verify_finish function in src/dkim.c in Exim before 4.76 might allow remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via format string specifiers in data used in DKIM logging, as demonstrated by an identity field containing a % (percent) character.

CVSS Scores

version 3.1