CVE-2015-7941 Denial of service in n/a

What is CVE-2015-7941?

CVE-2015-7941 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 18 Nov 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

libxml2 2.9.2 does not properly stop parsing invalid input, which allows context-dependent attackers to cause a denial of service (out-of-bounds read and libxml2 crash) via crafted XML data to the (1) xmlParseEntityDecl or (2) xmlParseConditionalSections function in parser.c, as demonstrated by non-terminated entities.

Weakness: CWE-119

Which versions are affected by CVE-2015-7941?

It affects 2 products.

Products include Canonical Ubuntu Linux, Xmlsoft Libxml2.

How do I fix CVE-2015-7941?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2015-7941 being exploited?

There is no known exploitation of CVE-2015-7941 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2015-7941, ECHO-9379-2cc3-90d6, GHSA-v48g-p9p2-j8cr, UBUNTU-CVE-2015-7941.