CVE catalog

CVE-2020-12740

tcpreplay: CVE-2020-12740

[CVE catalog]

Severity
Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Published
Source
[NVD] · [CVE record]
EPSS
1.69% · Oct 25, 2026

tcprewrite in Tcpreplay through 4.3.2 has a heap-based buffer over-read during a get_c operation. The issue is being triggered in the function get_ipv6_next() at common/get.c.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debiantcpreplaysid4.5.4-1fixed
Debiantcpreplayforky4.5.4-1fixed
Debiantcpreplaytrixie4.5.1-1fixed
Debiantcpreplaybookworm4.4.3-1fixed
Ubuntutcpreplaypro4.3.2-1build1vulnerable
Ubuntutcpreplaypro4.3.2-1ubuntu0.1~esm1fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debiantcpreplaysourcesid4.3.3-1unimportantNot reportedNot reported
Debiantcpreplaysourceforky4.3.3-1unimportantNot reportedNot reported
Debiantcpreplaysourcetrixie4.3.3-1unimportantNot reportedNot reported
Debiantcpreplaysourcebookworm4.3.3-1unimportantNot reportedNot reported
Ubuntutcpreplaydebpro4.3.2-1ubuntu0.1~esm1Not reportedUBUNTU-CVE-2020-12740Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [tcpreplay]Fixed
    Details (2)

    • 4.4.3-1 · amd64 · bookworm

      Fixed · Fixed: 4.3.3-1

      dsa · tcpreplay · debian · bookworm; dsa · tcpreplay · debian · 12

    • 4.4.3-1 · arm64 · bookworm

      Fixed · Fixed: 4.3.3-1

      dsa · tcpreplay · debian · bookworm; dsa · tcpreplay · debian · 12

[Debian 13 (Trixie)]

  • [tcpreplay]Fixed
    Details (2)

    • 4.5.1-1 · amd64 · trixie

      Fixed · Fixed: 4.3.3-1

      dsa · tcpreplay · debian · 13

    • 4.5.1-1 · arm64 · trixie

      Fixed · Fixed: 4.3.3-1

      dsa · tcpreplay · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]