critical
CVE-2019-16928
exim: remotely triggerable buffer overflow in string_vformat()
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by NVD, Red Hat, Amazon. Rated lower by Ubuntu (medium).
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.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 1 | exim, exim-debuginfo, exim-greylist and 3 more | 4.92-1.25.amzn1 |
| alpine 3.10 | exim | 4.92.2-r1 |
| alpine 3.11 | exim | 4.92.2-r1 |
| alpine 3.12 | exim | 4.92.2-r1 |
| alpine 3.13 | exim | 4.92.2-r1 |
| alpine 3.14 | exim | 4.92.2-r1 |
| alpine 3.15 | exim | 4.92.2-r1 |
| alpine 3.16 | exim | 4.92.2-r1 |
| alpine 3.17 | exim | 4.92.2-r1 |
| alpine 3.18 | exim | 4.92.2-r1 |
| alpine 3.19 | exim | 4.92.2-r1 |
| alpine 3.20 | exim | 4.92.2-r1 |
Show all 30 entries from 25 sources
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 1 | exim | 4.92-1.25.amzn1 |
| amazon linux 1 | exim-debuginfo | 4.92-1.25.amzn1 |
| amazon linux 1 | exim-greylist | 4.92-1.25.amzn1 |
| amazon linux 1 | exim-mon | 4.92-1.25.amzn1 |
| amazon linux 1 | exim-mysql | 4.92-1.25.amzn1 |
| amazon linux 1 | exim-pgsql | 4.92-1.25.amzn1 |
| alpine 3.10 | exim | 4.92.2-r1 |
| alpine 3.11 | exim | 4.92.2-r1 |
| alpine 3.12 | exim | 4.92.2-r1 |
| alpine 3.13 | exim | 4.92.2-r1 |
| alpine 3.14 | exim | 4.92.2-r1 |
| alpine 3.15 | exim | 4.92.2-r1 |
| alpine 3.16 | exim | 4.92.2-r1 |
| alpine 3.17 | exim | 4.92.2-r1 |
| alpine 3.18 | exim | 4.92.2-r1 |
| alpine 3.19 | exim | 4.92.2-r1 |
| alpine 3.20 | exim | 4.92.2-r1 |
| alpine 3.21 | exim | 4.92.2-r1 |
| alpine 3.22 | exim | 4.92.2-r1 |
| alpine 3.23 | exim | 4.92.2-r1 |
| alpine 3.24 | exim | 4.92.2-r1 |
| alpine 3.9 | exim | 4.92.3-r0 |
| alpine edge | exim | 4.92.2-r1 |
| debian 10 | exim4 | 4.92-8+deb10u3 |
| debian 11 | exim4 | 4.92.2-3 |
| debian 12 | exim4 | 4.92.2-3 |
| debian 13 | exim4 | 4.92.2-3 |
| debian 14 | exim4 | 4.92.2-3 |
| echo | exim4 | 4.92.2-3 |
| ubuntu 19.04 | exim4 | 4.92-4ubuntu1.4 |
References
- http://www.openwall.com/lists/oss-security/2019/09/28/1
- http://www.openwall.com/lists/oss-security/2019/09/28/2
- http://www.openwall.com/lists/oss-security/2019/09/28/3
- http://www.openwall.com/lists/oss-security/2019/09/28/4
- https://access.redhat.com/security/cve/CVE-2019-16928
- https://bugs.exim.org/show_bug.cgi?id=2449
- https://exim.org/static/doc/security/CVE-2019-16928.txt
- https://git.exim.org/exim.git/commit/478effbfd9c3cc5a627fc671d4bf94d13670d65f
All 21 references
- https://lists.exim.org/lurker/message/20190927.032457.c1044d4c.en.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EED7HM3MFIBAP5OIMJAFJ35JAJABTVSC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T3TJW4HPYH3O5HZCWGD6NSHTEBTTAPDC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UY6HPRW7MR3KBQ5JFHH6OXM7YCZBJCOB/
- https://nvd.nist.gov/vuln/detail/CVE-2019-16928
- https://seclists.org/bugtraq/2019/Sep/60
- https://security.gentoo.org/glsa/202003-47
- https://ubuntu.com/security/notices/USN-4141-1
- https://usn.ubuntu.com/4141-1/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16928
- https://www.cve.org/CVERecord?id=CVE-2019-16928
- https://www.debian.org/security/2019/dsa-4536