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Medium severity6.5NVD Advisory· Published Aug 25, 2023· Updated Jun 17, 2026

CVE-2023-38710

CVE-2023-38710

Description

An issue was discovered in Libreswan before 4.12. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notify INVALID_SPI is sent back. The notify payload's protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3) and causes the pluto daemon to crash and restart. NOTE: the earliest affected version is 3.20.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4
  • Libreswan/Libreswan3 versions
    cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*range: >=3.20,<4.12
    • (no CPE)
    • (no CPE)range: >=3.20,<4.12
  • osv-coords
    pkg:rpm/almalinux/libreswan
    Range: < 4.12-1.el9

Patches

Vulnerability mechanics

References

2

News mentions

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