Debian Bug report logs -
#1021738
man2html: CVE-2021-40647 CVE-2021-40648
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to debian-bugs-dist@lists.debian.org, team@security.debian.org, Robert Luberda <robert@debian.org>:
Bug#1021738; Package src:man2html.
(Thu, 13 Oct 2022 19:18:04 GMT) (full text, mbox, link).
Acknowledgement sent
to Moritz Mühlenhoff <jmm@inutil.org>:
New Bug report received and forwarded. Copy sent to team@security.debian.org, Robert Luberda <robert@debian.org>.
(Thu, 13 Oct 2022 19:18:04 GMT) (full text, mbox, link).
Message #5 received at submit@bugs.debian.org (full text, mbox, reply):
Source: man2html
X-Debbugs-CC: team@security.debian.org
Severity: important
Tags: security
Hi,
The following vulnerabilities were published for man2html.
CVE-2021-40647[0]:
| In man2html 1.6g, a specific string being read in from a file will
| overwrite the size parameter in the top chunk of the heap. This at
| least causes the program to segmentation abort if the heap size
| parameter isn't aligned correctly. In version before GLIBC version
| 2.29 and aligned correctly, it allows arbitrary write anywhere in the
| programs memory.
CVE-2021-40648[1]:
| In man2html 1.6g, a filename can be created to overwrite the previous
| size parameter of the next chunk and the fd, bk, fd_nextsize,
| bk_nextsize of the current chunk. The next chunk is then freed later
| on, causing a freeing of an arbitrary amount of memory.
https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933
If you fix the vulnerabilities please also make sure to include the
CVE (Common Vulnerabilities & Exposures) ids in your changelog entry.
For further information see:
[0] https://security-tracker.debian.org/tracker/CVE-2021-40647
https://www.cve.org/CVERecord?id=CVE-2021-40647
[1] https://security-tracker.debian.org/tracker/CVE-2021-40648
https://www.cve.org/CVERecord?id=CVE-2021-40648
Please adjust the affected versions in the BTS as needed.
Added tag(s) upstream.
Request was from Salvatore Bonaccorso <carnil@debian.org>
to control@bugs.debian.org.
(Thu, 13 Oct 2022 20:57:06 GMT) (full text, mbox, link).
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