frr: fix latest CVEs #688
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frr: fix latest CVEs #688
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Add a security fix from the stable/8.2 branch for two CVEs for the same vulneratiblity: CVE-2022-36440: A reachable assertion was found in Frrouting frr-bgpd 8.3.0 in the peek_for_as4_capability function. Attackers can maliciously construct BGP open packets and send them to BGP peers running frr-bgpd, resulting in DoS. CVE-2022-40302: An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart, or out-of-bounds read). This is possible because of inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case. Reference: https://nvd.nist.gov/vuln/detail/CVE-2022-36440 https://nvd.nist.gov/vuln/detail/CVE-2022-40302 https://cyberriskleaders.com/new-vulnerabilities-disclosed-in-frrouting-software/ FRRouting/frr#13202 Patch from: FRRouting/frr@02a0e45 Signed-off-by: Jonas Gorski <[email protected]>
Add a security fix from the stable/8.2 branch: CVE-2022-40318: An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart, or out-of-bounds read). This is possible because of inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case. NOTE: this behavior occurs in bgp_open_option_parse in the bgp_open.c file, a different location (with a different attack vector) relative to CVE-2022-40302. Reference: https://nvd.nist.gov/vuln/detail/CVE-2022-40318 https://cyberriskleaders.com/new-vulnerabilities-disclosed-in-frrouting-software/ Patch from: FRRouting/frr@72088b0 Signed-off-by: Jonas Gorski <[email protected]>
Add a security fix cherry-picked from master: CVE-2022-40318: An out-of-bounds read exists in the BGP daemon of FRRouting FRR through 8.4. When sending a malformed BGP OPEN message that ends with the option length octet (or the option length word, in case of an extended OPEN message), the FRR code reads of out of the bounds of the packet, throwing a SIGABRT signal and exiting. This results in a bgpd daemon restart, causing a Denial-of-Service condition. Reference: https://nvd.nist.gov/vuln/detail/CVE-2022-43681 https://cyberriskleaders.com/new-vulnerabilities-disclosed-in-frrouting-software/ Patch from: FRRouting/frr@766eec1 Signed-off-by: Jonas Gorski <[email protected]>
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Update for langdale is #689, master and mickledore are unaffected as these issues were already fixed in the original 8.4 release. |
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Is there anything I can do to help getting this applied? Both PRs were build tested and shortly runtested via a simple bgp setup across 4 machines. |
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I grabbed these this morning. |
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Great, thanks for the update! |
KanjiMonster
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Jun 2, 2023
Fix frr CVEs CVE-2022-36440, CVE-2022-40318, CVE-2022-43681 locally until the fixes get merged at OE upstream. Reference: openembedded/meta-openembedded#688 Signed-off-by: Jonas Gorski <[email protected]>
jklare
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Jun 2, 2023
Fix frr CVEs CVE-2022-36440, CVE-2022-40318, CVE-2022-43681 locally until the fixes get merged at OE upstream. Reference: openembedded/meta-openembedded#688 Signed-off-by: Jonas Gorski <[email protected]>
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applied as of 3670781 on |
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Add/backport patches for the latest round of CVEs:
First two taken from stable/8.2, last one cherry-picked from master.
Reference:
https://cyberriskleaders.com/new-vulnerabilities-disclosed-in-frrouting-software/