Vulnerability Description
Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Exim | Exim | >= 4.92, <= 4.92.2 |
| Canonical | Ubuntu Linux | 19.04 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 29 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2019/09/28/1ExploitMailing ListMitigation
- http://www.openwall.com/lists/oss-security/2019/09/28/2ExploitMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/09/28/3Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/09/28/4Mailing ListThird Party Advisory
- https://bugs.exim.org/show_bug.cgi?id=2449Issue TrackingPatchVendor Advisory
- https://git.exim.org/exim.git/commit/478effbfd9c3cc5a627fc671d4bf94d13670d65fPatch
- https://lists.exim.org/lurker/message/20190927.032457.c1044d4c.en.htmlVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproRelease Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproRelease Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproRelease Notes
- https://seclists.org/bugtraq/2019/Sep/60Mailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202003-47Third Party Advisory
- https://usn.ubuntu.com/4141-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4536Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/09/28/1ExploitMailing ListMitigation
FAQ
What is CVE-2019-16928?
CVE-2019-16928 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.
How severe is CVE-2019-16928?
CVE-2019-16928 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-16928?
Check the references section above for vendor advisories and patch information. Affected products include: Exim Exim, Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora.