CVE-2020-25211

Public Exploit

Description

In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff.

Category

6.0
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://twitter.com/grsecurity/status/1303646421158109185 third party advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1cc5ef91d2ff94d2bf2de3b3585423e8a1051cb6 mailing list patch vendor advisory exploit
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OLDYVOM4OS55HA45Y3UEVLDHYGFXPZUX/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BL2O4JAMPJG4YMLLJ7JFDHDJRXN4RKTC/ vendor advisory
https://security.netapp.com/advisory/ntap-20201009-0001/ third party advisory
https://www.debian.org/security/2020/dsa-4774 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00028.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-25211?
CVE-2020-25211 has been scored as a medium severity vulnerability.
How to fix CVE-2020-25211?
To fix CVE-2020-25211, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-25211 being actively exploited in the wild?
It is possible that CVE-2020-25211 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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