CVE-2017-16844: Buffer Overflow
First published: Sat Sep 23 2017(Updated: )
A flaw was found in the loadbuf function in formisc.c. When the buffer is too small, the function tries to resize it, but only by Bsize (=128) bytes. This is not necessarily enough and could cause denial of service. References: <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=876511">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=876511</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/procmail | <=3.22-24<=3.22-25 | 3.22-26 3.22-25+deb9u1 3.22-24+deb8u1 |
| debian/procmail | 3.22-26+deb10u1 3.22-26+deb11u1 3.22-27 3.24+really3.22-2 | |
| Red Hat Procmail | =3.22 |
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Reference Links
- http://lcamtuf.coredump.cx/afl/
- https://security-tracker.debian.org/tracker/CVE-2017-16844
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=876511
- http://www.securitytracker.com/id/1039844
- https://access.redhat.com/errata/RHSA-2017:3269
- https://lists.debian.org/debian-lts-announce/2017/11/msg00019.html
- https://www.debian.org/security/2017/dsa-4041
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1500071
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1336923&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1336923&action=edit
- https://access.redhat.com/support/policy/updates/errata/
- https://bugzilla.redhat.com/show_bug.cgi?id=1500070
Frequently Asked Questions
What is the severity of CVE-2017-16844?
CVE-2017-16844 has a severity rating that indicates it can lead to denial of service due to improper buffer handling.
How do I fix CVE-2017-16844?
To fix CVE-2017-16844, update the procmail package to a version that is 3.22-26 or higher.
Which versions of procmail are affected by CVE-2017-16844?
Affected versions of procmail include 3.22 up to and including 3.22-25.
What kind of vulnerability is CVE-2017-16844?
CVE-2017-16844 is a denial of service vulnerability caused by improper buffer resizing.
Is CVE-2017-16844 specific to any operating system?
CVE-2017-16844 specifically affects Debian-based systems running the procmail package.
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