CVE-2013-4248 Security feature bypass in n/a

What is CVE-2013-4248?

CVE-2013-4248 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 18 Aug 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The openssl_x509_parse function in openssl.c in the OpenSSL module in PHP before 5.4.18 and 5.5.x before 5.5.2 does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Weakness: CWE-20

Which versions are affected by CVE-2013-4248?

It affects 3 products.

Products include Canonical Ubuntu Linux, Php Php, Redhat Enterprise Linux.

How do I fix CVE-2013-4248?

Upgrade to a fixed version.

Is CVE-2013-4248 being exploited?

There is no known exploitation of CVE-2013-4248 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 DSA-2742-1, GHSA-hhfm-3287-cc2v, MGASA-2013-0264.