CVE-2020-24587

NameCVE-2020-24587
DescriptionThe 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2689-1, DLA-2690-1
NVD severitylow

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firmware-nonfree (PTS)stretch/non-free20161130-5vulnerable
stretch/non-free (security)20190114-2~deb9u1vulnerable
buster/non-free20190114-2vulnerable
bullseye/non-free, sid/non-free20210315-2vulnerable
linux (PTS)stretch4.9.228-1vulnerable
stretch (security)4.9.272-1fixed
buster4.19.194-1fixed
buster (security)4.19.171-2vulnerable
bullseye, sid5.10.40-1vulnerable
linux-4.19 (PTS)stretch (security)4.19.194-1~deb9u1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firmware-nonfreesource(unstable)(unfixed)
linuxsourcestretch4.9.272-1DLA-2689-1
linuxsourcebuster4.19.194-1
linuxsource(unstable)(unfixed)
linux-4.19sourcestretch4.19.194-1~deb9u1DLA-2690-1

Notes

https://papers.mathyvanhoef.com/usenix2021.pdf
https://www.fragattacks.com/
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html
https://lore.kernel.org/linux-wireless/20210511180259.159598-1-johannes@sipsolutions.net/
https://lore.kernel.org/linux-wireless/20210511200110.3f8290e59823.I622a67769ed39257327a362cfc09c812320eb979@changeid/
https://lore.kernel.org/linux-wireless/20210511200110.037aa5ca0390.I7bb888e2965a0db02a67075fcb5deb50eb7408aa@changeid/
firmware-nonfree (iwlwifi-fw-2021-05-12) addressed the firmware part of the CVE

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