CVE-2017-16844
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22...
CVE-2017-16844 is a critical vulnerability (CVSS 9.8) in Procmail, published November 16, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 12.2%, the 96th percentile. Fixed in procmail 3.22-53.
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
9.8
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
CVE-2017-16844- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
CVE-2017-16844- Updated
- 2026-11-02
EUVDEUVD-2017-8018 No score
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
EUVD-2017-8018- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4f62-c8fw-44pp
9.8
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22...
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
GHSA-4f62-c8fw-44pp- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-119
- Updated
- 2026-11-02
OSVAZL-36982
9.8
CVE-2017-16844 affecting package procmail for versions less than 3.22-53
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
AZL-36982- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVAZL-6803
9.8
CVE-2017-16844 affecting package procmail for versions less than 3.22-53
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
AZL-6803- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Show 9 moreShow less
OSVAZL-7332
9.8
CVE-2017-16844 affecting package procmail for versions less than 3.22-53
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
AZL-7332- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSV
9.8
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
CVE-2017-16844- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2017-16844
9.8
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
DEBIAN-CVE-2017-16844- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVRHSA-2017:3269
7.5
Red Hat Security Advisory: procmail security update
- Record
RHSA-2017:3269- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2017-16844
9.8
Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.
- Record
UBUNTU-CVE-2017-16844- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11194-1 No score
procmail-3.22-277.3 on GA media
These are all security issues fixed in the procmail-3.22-277.3 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11194-1- Updated
- 2026-11-02
OSVSUSE-SU-2017:3231-1 No score
Security update for procmail
This update for procmail fixes the following issues:
Security issue fixed:
- CVE-2017-16844: Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618. (bnc#1068648)
- Record
SUSE-SU-2017:3231-1- Updated
- 2026-11-02
OSVSUSE-SU-2018:0173-1 No score
Security update for procmail
This update for procmail fixes the following issues:
- CVE-2017-16844: Heap-based buffer overflow in loadbuf function could lead to remote denial of service (bsc#1068648)
- Record
SUSE-SU-2018:0173-1- Updated
- 2026-11-02
OSVUSN-3483-1 No score
procmail vulnerability
Jakub Wilk discovered that the formail tool incorrectly handled certain malformed mail messages. An attacker could use this flaw to cause formail to crash, resulting in a denial of service, or possibly execute arbitrary code.
- Record
USN-3483-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
procmailAzure Linux:3 |
before 3.22-53 | 3.22-53 |
procmailAzure Linux:2 |
before 3.22-53 | 3.22-53 |
procmailDebian:12 |
before 3.22-26 | 3.22-26 |
procmailDebian:13 |
before 3.22-26 | 3.22-26 |
procmailDebian:14 |
before 3.22-26 | 3.22-26 |
procmailDebian:7 |
before 3.22-20+deb7u2, plus listed versions 3.22-203.22-20+deb7u1 |
3.22-20+deb7u2 |
procmailDebian:8 |
before 3.22-24+deb8u1, plus listed versions 3.22-24 |
3.22-24+deb8u1 |
procmailDebian:9 |
before 3.22-25+deb9u1, plus listed versions 3.22-25 |
3.22-25+deb9u1 |
procmailRed Hat:enterprise_linux:7::client |
before 0:3.22-36.el7_4.1 | 0:3.22-36.el7_4.1 |
procmail-debuginfoRed Hat:enterprise_linux:7::client |
before 0:3.22-36.el7_4.1 | 0:3.22-36.el7_4.1 |
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| Package | Affected | Fixed |
|---|---|---|
procmailRed Hat:enterprise_linux:7::server |
before 0:3.22-36.el7_4.1 | 0:3.22-36.el7_4.1 |
procmail-debuginfoRed Hat:enterprise_linux:7::server |
before 0:3.22-36.el7_4.1 | 0:3.22-36.el7_4.1 |
procmailRed Hat:enterprise_linux:7::workstation |
before 0:3.22-36.el7_4.1 | 0:3.22-36.el7_4.1 |
procmail-debuginfoRed Hat:enterprise_linux:7::workstation |
before 0:3.22-36.el7_4.1 | 0:3.22-36.el7_4.1 |
procmailSUSE:Linux Enterprise Server 11 SP4 |
before 3.22-240.8.3.1 | 3.22-240.8.3.1 |
procmailSUSE:Linux Enterprise Server for SAP Applications 11 SP4 |
before 3.22-240.8.3.1 | 3.22-240.8.3.1 |
procmailSUSE:Linux Enterprise Desktop 12 SP2 |
before 3.22-269.3.5 | 3.22-269.3.5 |
procmailSUSE:Linux Enterprise Desktop 12 SP3 |
before 3.22-269.3.5 | 3.22-269.3.5 |
procmailSUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 |
before 3.22-269.3.5 | 3.22-269.3.5 |
procmailSUSE:Linux Enterprise Server 12 SP2 |
before 3.22-269.3.5 | 3.22-269.3.5 |
procmailSUSE:Linux Enterprise Server for SAP Applications 12 SP2 |
before 3.22-269.3.5 | 3.22-269.3.5 |
procmailSUSE:Linux Enterprise Server 12 SP3 |
before 3.22-269.3.5 | 3.22-269.3.5 |
procmailSUSE:Linux Enterprise Server for SAP Applications 12 SP3 |
before 3.22-269.3.5 | 3.22-269.3.5 |
procmailUbuntu:14.04:LTS |
before 3.22-21ubuntu0.2, plus listed versions 3.22-203.22-213.22-21ubuntu0.1 |
3.22-21ubuntu0.2 |
procmailUbuntu:16.04:LTS |
before 3.22-25ubuntu0.16.04.1, plus listed versions 3.22-25 |
3.22-25ubuntu0.16.04.1 |
procmailopenSUSE:Tumbleweed |
before 3.22-277.3 | 3.22-277.3 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
lists.debian.org/debian-lts-announce/2017/11/msg00019.html
access.redhat.com/errata/RHSA-2017:3269
bugs.debian.org/cgi-bin/bugreport.cgi?bug=876511
debian.org/security/2017/dsa-4041
securitytracker.com/id/1039844
nvd.nist.gov/vuln/detail/CVE-2017-16844
Show 14 moreShow less
github.com/advisories/GHSA-4f62-c8fw-44pp
security-tracker.debian.org/tracker/CVE-2017-16844
access.redhat.com/security/updates/classification
bugzilla.redhat.com/show_bug.cgi?id=1500070
security.access.redhat.com/data/csaf/v2/advisories/2017/rhsa-2017_3269.json
access.redhat.com/security/cve/CVE-2017-16844
cve.org/CVERecord?id=CVE-2017-16844
suse.com/support/update/announcement/2017/suse-su-20173231-1
bugzilla.suse.com/1068648
suse.com/security/cve/CVE-2017-16844
suse.com/support/update/announcement/2018/suse-su-20180173-1
ubuntu.com/security/CVE-2017-16844
ubuntu.com/security/notices/USN-3483-1
ubuntu.com/security/notices/USN-3483-2