CVE-2015-1789 Denial of service in n/a

What is CVE-2015-1789?

CVE-2015-1789 is a high-severity denial of service vulnerability in Openssl Openssl, published on 12 Jun 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The X509_cmp_time function in crypto/x509/x509_vfy.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted length field in ASN1_TIME data, as demonstrated by an attack against a server that supports client authentication with a custom verification callback.

Weakness: CWE-119

Which versions are affected by CVE-2015-1789?

It affects 2 products.

Products include Openssl Openssl, Oracle Sparc-Opl Service Processor.

How do I fix CVE-2015-1789?

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-2015-1789 being exploited?

There is no known exploitation of CVE-2015-1789 in the wild and no public exploit code.

Other vulnerabilities in Openssl Openssl

• CVE-2009-3245 Null dereference in n/a Critical 10.0
• CVE-2006-3738 Memory corruption in n/a Critical 10.0
• CVE-2026-63073 Untrusted Sender DN Used as Format String in CMP Response Validation Critical 9.8
• CVE-2016-6309 Use after free in n/a Critical 9.8
• CVE-2016-0799 Integer overflow in n/a Critical 9.8

All Openssl Openssl vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2015-1789, GHSA-q289-c6qx-8gxc, UBUNTU-CVE-2015-1789.