Vulnerability · Published Sep 20, 2023 · Assigned by jenkins

CVE-2023-43496

High 8.8

In plain English

A high-severity incorrect default permissions in Jenkins from Jenkins Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.0%top 35.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.jenkins-ci.main:jenkins-core	2.414.2	GHSA-55wp-3pq4-w8p9
Maven	org.jenkins-ci.main:jenkins-core	2.424	GHSA-55wp-3pq4-w8p9

Affected products (as reported)

Vendor	Product	Versions
Jenkins Project	Jenkins	see references

Weakness: CWE-276 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Jenkins Security Advisory 2023-09-20 vendor-advisory
http://www.openwall.com/lists/oss-security/2023/09/20/5