CVE-2021-43579: debian debian_linux Out-of-bounds Write
CVSS: 7.8v3.1HighModified
AliasesMGASA-2022-0033SUSE-SU-2022:14877-1UBUNTU-CVE-2021-43579DEBIAN-CVE-2021-43579openSUSE-SU-2024:11741-1
Published 12-11-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-43579 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 7.35% chance of exploitation in the next 30 days, higher than 94.3% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
7.35%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github, exploit-database
Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 12-11-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A stack-based buffer overflow in image_load_bmp() in HTMLDOC <= 1.9.13 results in remote code execution if the victim converts an HTML document linking to a crafted BMP file.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
7.35%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
0.00 pp
From 7.35% on 21-09-2026
21-09-202621-10-2026
EPSS score7.35%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundHtmldoc
Maturity: poc
HTMLDOC 1.9.13 - Stack Buffer Overflow
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Debian2 products
- htmldoc< 1.9.13-1
- debian_linuxEOL9.0
Htmldoc_project1 product
- htmldoc≤ 1.9.13
Mageia1 product
- htmldoc< 1.9.14-1.mga8
Opensuse1 product
- htmldoc&distro=openSUSE Tumbleweed< 1.9.14-1.1
Suse1 product
- htmldoc&distro=Subscription Management Tool 11 SP3< 1.8.27-170.4.6.1
Ubuntu1 product
- htmldoc< 1.8.27-8ubuntu1+esm3 | < 1.8.27-8ubuntu1.1+esm2 | < 1.9.2-1ubuntu0.2+esm1 | < 1.9.7-1ubuntu0.3+esm1
6 vendors · 7 products
References
15 links- github.com/michaelrsweet/htmldoc/issues/453X Refsource MISCREPORTExploitIssue TrackingPatchThird Party Advisory
- github.com/michaelrsweet/htmldoc/commit/27d08989a5a567155d506ac870ae7d8cc88fa58bX Refsource MISCREPORTPatchThird Party Advisory
- github.com/michaelrsweet/htmldoc/compare/v1.9.12...v1.9.13X Refsource MISCREPORTRelease NotesThird Party Advisory
- github.com/michaelrsweet/htmldoc/issues/456X Refsource MISCExploitIssue TrackingPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2022/02/msg00022.htmlMailing ListX Refsource MLISTThird Party Advisory