CVE-2021-41043: tcpdump tcpslice Use After Free
CVSS: 5.5v3.1MediumModified
AliasesRHSA-2024:0410RHSA-2024:0571RHSA-2024:0769RHSA-2024:1090RHSA-2024:2211UBUNTU-CVE-2021-41043DEBIAN-CVE-2021-41043
Published 05-01-2022Last modified 04-08-2024
Vulnerability summary
CVE-2021-41043 is a medium (CVSS 5.5) Use After Free vulnerability in tcpdump tcpslice. EPSS estimates a 0.87% chance of exploitation in the next 30 days, higher than 57.9% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.87%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 05-01-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Use after free in tcpslice triggers AddressSanitizer, no other confirmed impact.
CVSS metrics
5 scores · 4 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 4 agree
- OSV · Red hatEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- 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
0.87%
Chance of exploitation in the next 30 days
Percentile
58%
Versus all other CVEs
30-day change
0.00 pp
From 0.87% on 19-09-2026
19-09-202619-10-2026
EPSS score0.87%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundTcpslice
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Redhat3 products
- tcpdump< 14:4.99.0-6.el9_2.1 | < 14:4.99.0-9.el9 | < 14:4.9.3-3.el8_9.1 | < 14:4.9.3-3.el8_6.1 | < 14:4.9.3-3.el8_8.1
- tcpdump-debuginfo< 14:4.99.0-6.el9_2.1 | < 14:4.99.0-9.el9 | < 14:4.9.3-3.el8_9.1 | < 14:4.9.3-3.el8_6.1 | < 14:4.9.3-3.el8_8.1
- tcpdump-debugsource< 14:4.99.0-6.el9_2.1 | < 14:4.99.0-9.el9 | < 14:4.9.3-3.el8_9.1 | < 14:4.9.3-3.el8_6.1 | < 14:4.9.3-3.el8_8.1
Debian1 product
- tcpslice< 1.5-1
Tcpdump1 product
- tcpslice< 1.5
The tcpdump group1 product
- tcpslice≥ unspecified, < 1.5
Ubuntu1 product
- tcpsliceAll versions (No fix recorded)
5 vendors · 7 products
References
20 links- github.com/the-tcpdump-group/tcpslice/issues/11X Refsource MISCARTICLEREPORTExploitThird Party Advisory
