CVE-2023-3748: Inifinite loop in babld message parsing may cause dos
First published: Tue Jul 18 2023(Updated: )
A flaw was found in FRRouting when parsing certain babeld unicast hello messages that are intended to be ignored. This issue may allow an attacker to send specially crafted hello messages with the unicast flag set, the interval field set to 0, or any TLV that contains a sub-TLV with the Mandatory flag set to enter an infinite loop and cause a denial of service.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/frr | <8.5 | 8.5 |
| ubuntu/frr | <8.4.2-1ubuntu1.2 | 8.4.2-1ubuntu1.2 |
| Frrouting Frrouting | <8.5 | |
| <8.5 | ||
| debian/frr | <=8.4.4-1.1~deb12u1<=8.4.4-1.1 | 6.0.2-2+deb10u1 7.5.1-1.1+deb10u1 7.5.1-1.1+deb11u2 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2223668
- https://access.redhat.com/security/cve/CVE-2023-3748
- https://launchpad.net/bugs/cve/CVE-2023-3748
- https://github.com/FRRouting/frr/issues/11808
- https://access.redhat.com/security/cve/cve-2023-3748
- https://github.com/FRRouting/frr/pull/12950
- https://github.com/FRRouting/frr/pull/12952
- https://github.com/FRRouting/frr/commit/0a95d121ca8e1f43d41d952d6c82d111ca850085
- https://security-tracker.debian.org/tracker/CVE-2023-3748
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3748
- https://ubuntu.com/security/notices/USN-6240-1
- https://nvd.nist.gov/vuln/detail/CVE-2023-3748
- https://github.com/FRRouting/frr/commit/ae1e0e1fed77716bc06f181ad68c4433fb5523d0
- https://ubuntu.com/security/CVE-2023-3748
Frequently Asked Questions
What is the vulnerability ID of this flaw in FRRouting?
The vulnerability ID is CVE-2023-3748.
What is the severity of CVE-2023-3748?
The severity of CVE-2023-3748 is high, with a severity value of 7.5.
What software versions are affected by CVE-2023-3748?
The affected software versions are FRRouting 8.4.2-1ubuntu1.2, FRRouting 8.5, and Frrouting Frrouting up to version 8.5.
What is the remedy for CVE-2023-3748 in Ubuntu?
The remedy for CVE-2023-3748 in Ubuntu is to update to version 8.4.2-1ubuntu1.2 of the FRRouting package.
What is the remedy for CVE-2023-3748 in Red Hat?
The remedy for CVE-2023-3748 in Red Hat is to update to version 8.5 of the FRRouting package.
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