Buffer overflow in Man2html Project
CVE-2021-40647
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Man2html Project — versions 1.6g
Weakness classification (CWE)
References
- gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-40647?
- CVE-2021-40647 is a medium-severity vulnerability in Man2html Project, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2022-09-09.
- How severe is CVE-2021-40647?
- Medium severity. CVSS v3 base score is 5.5 out of 10.