Vulnerability · Published May 11, 2021 · Assigned by mitre
CVE-2020-24586
Low 3.5
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 5.8% (higher than 93% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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 received fragments be cleared from memory after (re)connecting to a network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP, CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data.
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-2020-24586 |
| Debian:13 | firmware-nonfree | 20210818-1 | DEBIAN-CVE-2020-24586 |
| Debian:14 | firmware-nonfree | 20210818-1 | DEBIAN-CVE-2020-24586 |
| Debian:12 | linux | 5.10.46-1 | DEBIAN-CVE-2020-24586 |
| Debian:13 | linux | 5.10.46-1 | DEBIAN-CVE-2020-24586 |
| Debian:14 | linux | 5.10.46-1 | DEBIAN-CVE-2020-24586 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2020-24586 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2020-24586 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2020-24586 |
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