Vulnerability Details : CVE-2022-32296
The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056.
Products affected by CVE-2022-32296
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-32296
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 15 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-32296
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
2.1
|
LOW | AV:L/AC:L/Au:N/C:P/I:N/A:N |
3.9
|
2.9
|
NIST | |
3.3
|
LOW | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
1.8
|
1.4
|
NIST |
CWE ids for CVE-2022-32296
-
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-32296
-
https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
[SECURITY] [DLA 3065-1] linux security update
-
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5
kernel/git/torvalds/linux.git - Linux kernel source treeMailing List;Patch;Vendor Advisory
-
https://github.com/0xkol/rfc6056-device-tracker
GitHub - 0xkol/rfc6056-device-tracker: An implementation of a device tracking technique based on Algorithm 4 (Double-Hash Port Selection) of RFC 6056.
-
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9
Release Notes;Vendor Advisory
-
https://arxiv.org/abs/2209.12993
[2209.12993] Device Tracking via Linux's New TCP Source Port Selection Algorithm (Extended Version)
-
https://www.debian.org/security/2022/dsa-5173
Debian -- Security Information -- DSA-5173-1 linux
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