kernel: Reassembling fragments encrypted under different keys
Published May 11, 2021
3.1
LOWCVSS 3.1
EPSS 2.59%
Description
The 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.
Affected products
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- ≥ 4.4 · < 4.4.271
- ≥ 4.9 · < 4.9.271
- ≥ 4.14 · < 4.14.235
- ≥ 4.19 · < 4.19.193
- ≥ 5.4 · < 5.4.124
- ≥ 5.10 · < 5.10.42
- ≥ 5.12 · < 5.12.9
No data.
Red Hat Enterprise Linux 8
kernel-0:4.18.0-348.el8
Fixed · RHSA-2021:4356
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-348.rt7.130.el8
Fixed · RHSA-2021:4140
Red Hat Enterprise Linux 5
kernel
Out of support scope
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel-alt
Will not fix
Red Hat Enterprise Linux 7
kernel-rt
Out of support scope
Red Hat Enterprise Linux 9
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-348.el8 | Fixed | RHSA-2021:4356 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-348.rt7.130.el8 | Fixed | RHSA-2021:4140 |
| Red Hat Enterprise Linux 5 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Out of support scope | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
Mitigation for this issue is either not available or the currently available options does not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
References (15)
- http://www.openwall.com/lists/oss-security/2021/05/11/12 mailing-listMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2020-24587 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1959654 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-17304 Advisory
- https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html mailing-listMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html mailing-listMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/04/msg00002.html mailing-list
- https://lore.kernel.org/linux-wireless/20210511200110.3f8290e59823.I622a67769ed39257327a362cfc09c812320eb979@changeid/
- https://nvd.nist.gov/vuln/detail/CVE-2020-24587
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu vendor-advisoryThird Party Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2020-24587
- https://www.fragattacks.com ExploitThird Party Advisory
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html Third Party Advisory
Change history (0)
No recorded changes yet.
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