Bug 2215952 (CVE-2023-38711) - CVE-2023-38711 libreswan: Invalid IKEv1 Quick Mode ID causes restart
Summary: CVE-2023-38711 libreswan: Invalid IKEv1 Quick Mode ID causes restart
Keywords:
Status: NEW
Alias: CVE-2023-38711
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2215955 2215956 2230238 2215957
Blocks: 2215953 2225370
TreeView+ depends on / blocked
 
Reported: 2023-06-19 13:16 UTC by TEJ RATHI
Modified: 2023-08-16 05:40 UTC (History)
2 users (show)

Fixed In Version: libreswan 4.12
Doc Type: If docs needed, set a value
Doc Text:
A NULL pointer dereference flaw was found in Libreswan when processing IKEv1 Quick Mode requests. When an IKEv1 Quick Mode connection configured with ID_IPV4_ADDR or ID_IPV6_ADDR receives an IDcr payload with ID_FQDN, it triggers a NULL pointer dereference error. This flaw allows a malicious client or attacker to send a malformed IKEv1 Quick Mode packet, causing a crash and restart of the libreswan pluto daemon. When sent continuously, this issue leads to a denial of service attack.
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Description TEJ RATHI 2023-06-19 13:16:32 UTC 
When an IKEv1 Quick Mode connection configured with ID_IPV4_ADDR or ID_IPV6_ADDR, receives an IDcr payload with ID_FQDN, a null pointer dereference causes a crash and restart of the pluto daemon.

https://libreswan.org/security/CVE-2023-38711/CVE-2023-38711.txt
Comment 5 TEJ RATHI 2023-07-25 06:15:33 UTC 
Vulnerable versions : libreswan 4.6 - 4.11
Not vulnerable      : libreswan 3.0 - 4.5, 4.12+

Vulnerable code introduced in libreswan v4.6
Comment 6 TEJ RATHI 2023-08-09 05:29:25 UTC 
This CVE is now public by upstream:

https://libreswan.org/security/CVE-2023-38711/CVE-2023-38711.txt
https://libreswan.org/security/CVE-2023-38711/CVE-2023-38711.patch
Comment 7 TEJ RATHI 2023-08-09 05:39:21 UTC 
Created libreswan tracking bugs for this issue:

Affects: fedora-all [bug 2230238]
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