Summary
LLDP is an industry standard protocol designed to supplant proprietary Link-Layer protocols such as EDP or CDP. The goal of LLDP is to provide an inter-vendor compatible mechanism to deliver Link-Layer notifications to adjacent network devices.
Security Fix(es):
* lldp/openvswitch: denial of service via externally triggered memory leak (CVE-2020-27827)
* lldpd: out-of-bounds read when decoding SONMP packets (CVE-2021-43612)
* lldpd: CDP PDU Packet cdp.c out-of-bounds read (CVE-2023-41910)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | lldpd | 1.0.18-4.el9 |
| AlmaLinux · 9 | lldpd-devel | 1.0.18-4.el9 |
Vulnerabilities 3
-
High 7.5
A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when a…
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High 7.5
In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bo…
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Unscored —
An issue was discovered in lldpd before 1.0.17. By crafting a CDP PDU packet with specific CDP_TLV_ADDRESSES TLVs, a ma…
References
-
report
https://access.redhat.com/security/cve/CVE-2020-27827
-
report
https://access.redhat.com/security/cve/CVE-2021-43612
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report
https://access.redhat.com/security/cve/CVE-2023-41910
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report
https://bugzilla.redhat.com/1921438
-
report
https://bugzilla.redhat.com/2040388
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report
https://bugzilla.redhat.com/2237411
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advisory
https://errata.almalinux.org/9/ALSA-2024-9158.html