CVE-2018-18508 Null dereference in NSS

What is CVE-2018-18508?

CVE-2018-18508 is a medium-severity vulnerability in Mozilla Network Security Services, published on 22 Oct 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In Network Security Services (NSS) before 3.36.7 and before 3.41.1, a malformed signature can cause a crash due to a null dereference, resulting in a Denial of Service.

Weakness: CWE-476

Which versions are affected by CVE-2018-18508?

It affects 9 products.

Products include Mozilla Network Security Services, Siemens Ruggedcom Rox Mx5000 Firmware, Siemens Ruggedcom Rox Rx1400 Firmware, Siemens Ruggedcom Rox Rx1500 Firmware, Siemens Ruggedcom Rox Rx1501 Firmware, Siemens Ruggedcom Rox Rx1510 Firmware and 3 more.

How do I fix CVE-2018-18508?

Upgrade to a fixed version.

Is CVE-2018-18508 being exploited?

There is no known exploitation of CVE-2018-18508 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Network Security Services

• CVE-2019-17006 Memory corruption in NSS Critical 9.8
• CVE-2017-5461 Memory corruption in Firefox Critical 9.8
• CVE-2009-2404 Memory corruption in n/a Critical 9.3
• CVE-2017-11695 Memory corruption in n/a High 7.8
• CVE-2017-11696 Memory corruption in n/a High 7.8

All Mozilla Network Security Services vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2018-18508, GHSA-45r6-rwfw-29cq, UBUNTU-CVE-2018-18508, USN-3898-1.