Vulnerability · Published May 11, 2021 · Assigned by mitre
CVE-2020-24587
Low 2.6
In plain English
A low-severity security flaw in the kernel-tools-libs-devel package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)2.6Low
Exploit odds (30 days)2.6%top 14.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-348.el8 | ALSA-2021:4356 |
| Debian:12 | firmware-nonfree | 20210818-1 | DEBIAN-CVE-2020-24587 |
| Debian:13 | firmware-nonfree | 20210818-1 | DEBIAN-CVE-2020-24587 |
| Debian:14 | firmware-nonfree | 20210818-1 | DEBIAN-CVE-2020-24587 |
| Debian:12 | linux | 5.10.46-1 | DEBIAN-CVE-2020-24587 |
| Debian:13 | linux | 5.10.46-1 | DEBIAN-CVE-2020-24587 |
| Debian:14 | linux | 5.10.46-1 | DEBIAN-CVE-2020-24587 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2020-24587 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2020-24587 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2020-24587 |
Affected products (as reported)
References
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html
- 20210511 Multiple Vulnerabilities in Frame Aggregation and Fragmentation Implementations of 802.11 Specification Affecting Cisco Products: May 2021 vendor-advisory
- https://www.fragattacks.com
- https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
- [oss-security] 20210511 various 802.11 security issues - fragattacks.com mailing-list
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update mailing-list
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update mailing-list
- https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
- [debian-lts-announce] 20230401 [SECURITY] [DLA 3380-1] firmware-nonfree LTS new upstream version (security updates and newer firmware for Linux 5.10) mailing-list