CVE-2021-46142: debian debian_linux Use After Free
CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2021-46142DEBIAN-CVE-2021-46142
Published 06-01-2022Last modified 04-08-2024
Vulnerability summary
CVE-2021-46142 is a medium (CVSS 5.5) Use After Free vulnerability in debian debian_linux. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 64.8% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
1.09%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 5 · Related 3Timeline
- 06-01-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in uriparser before 0.9.6. It performs invalid free operations in uriNormalizeSyntax.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.09%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
0.00 pp
From 1.09% on 19-09-2026
19-09-202619-10-2026
EPSS score1.09%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundUriparser
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Debian2 products
- uriparser< 0.9.6+dfsg-1
- debian_linuxEOL9.0 | 10.0 | 11.0
Fedoraproject2 products
- extra_packages_for_enterprise_linux8.0
- fedoraEOL34 | 35
Ubuntu1 product
- uriparser< 0.7.5-1ubuntu2+esm3 | < 0.8.4-1ubuntu0.16.04.1~esm3 | < 0.8.4-1+deb9u2ubuntu0.1 | < 0.9.3-2ubuntu0.1~esm2
Uriparser_project1 product
- uriparser< 0.9.6
5 vendors · 9 products
References
11 links- github.com/uriparser/uriparser/issues/122X Refsource MISCREPORTExploitIssue TrackingPatchThird Party Advisory
- blog.hartwork.org/posts/uriparser-096-with-security-fixes-released/X Refsource CONFIRMThird Party Advisory
