Linux Kernel Netfilter nf_conntrack_irc.c nf_conntrack_irc communication channel to intended endpoints

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.04

A vulnerability was found in Linux Kernel (Operating System) (version now known). It has been classified as critical. This affects the function nf_conntrack_irc of the file net/netfilter/nf_conntrack_irc.c of the component Netfilter. The manipulation with an unknown input leads to a communication channel to intended endpoints vulnerability. CWE is classifying the issue as CWE-923. The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.

The weakness was disclosed 09/02/2022. The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2022-2663 since 08/04/2022. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/11/2022).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at lore.kernel.org.

Productinfo

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Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Communication channel to intended endpoints
CWE: CWE-923
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: lore.kernel.org

Timelineinfo

08/04/2022 🔍
09/02/2022 +29 days 🔍
09/02/2022 +0 days 🔍
10/11/2022 +39 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: DLA 3131-1
Status: Confirmed

CVE: CVE-2022-2663 (🔍)

Entryinfo

Created: 09/02/2022 08:27
Updated: 10/11/2022 09:01
Changes: 09/02/2022 08:27 (41), 10/11/2022 08:58 (1), 10/11/2022 09:01 (11)
Complete: 🔍

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