CVE-2019-16928

critical-risk
Published 2019-09-27

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.

Do I need to act?

!
89.8% chance of exploitation in next 30 days
EPSS score — higher than 10% of all CVEs
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (6)

Affected Vendors

Debian Canonical Fedoraproject Exim

References (29)

Exploit http://www.openwall.com/lists/oss-security/2019/09/28/1
Exploit http://www.openwall.com/lists/oss-security/2019/09/28/2
Mailing List http://www.openwall.com/lists/oss-security/2019/09/28/3
Mailing List http://www.openwall.com/lists/oss-security/2019/09/28/4
Issue Tracking https://bugs.exim.org/show_bug.cgi?id=2449
Patch https://git.exim.org/exim.git/commit/478effbfd9c3cc5a627fc671d4bf94d13670d65f
Vendor Advisory https://lists.exim.org/lurker/message/20190927.032457.c1044d4c.en.html
Release Notes https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Release Notes https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Release Notes https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Mailing List https://seclists.org/bugtraq/2019/Sep/60
Third Party Advisory https://security.gentoo.org/glsa/202003-47
Third Party Advisory https://usn.ubuntu.com/4141-1/
Third Party Advisory https://www.debian.org/security/2019/dsa-4536
Exploit http://www.openwall.com/lists/oss-security/2019/09/28/1
Exploit http://www.openwall.com/lists/oss-security/2019/09/28/2
Mailing List http://www.openwall.com/lists/oss-security/2019/09/28/3
Mailing List http://www.openwall.com/lists/oss-security/2019/09/28/4
Issue Tracking https://bugs.exim.org/show_bug.cgi?id=2449
Patch https://git.exim.org/exim.git/commit/478effbfd9c3cc5a627fc671d4bf94d13670d65f
and 9 more references
72
/ 100
critical-risk
Severity 32/34 · Critical
Exploitability 27/34 · High
Exposure 13/34 · Low