What’s Vulnerable › Vulnerabilities

CVE-2018-16839

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-10-31 · updated 2026-06-17
• Weakness: CWE-122

Description

Curl versions 7.33.0 through 7.61.1 are vulnerable to a buffer overrun in the SASL authentication code that may lead to denial of service.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 18.10
• Debian Linux: 8.0, 9.0
• curl: from 7.33.0 through 7.61.1

References

• http://www.securitytracker.com/id/1042012
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16839
• https://curl.haxx.se/docs/CVE-2018-16839.html
• https://github.com/curl/curl/commit/f3a24d7916b9173c69a3e0ee790102993833d6c5
• https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2018/11/msg00005.html
• https://security.gentoo.org/glsa/201903-03
• https://usn.ubuntu.com/3805-1/
• https://www.debian.org/security/2018/dsa-4331
• http://www.securitytracker.com/id/1042012
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16839
• https://curl.haxx.se/docs/CVE-2018-16839.html

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