Squid Proxy up to 6.0.0 Collapsed Forwarding use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Squid Proxy up to 6.0.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Collapsed Forwarding Handler. The manipulation leads to use after free. This vulnerability is documented as CVE-2023-49288. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Squid Proxy up to 6.0.0 (Firewall Software). It has been rated as problematic. This issue affects an unknown part of the component Collapsed Forwarding Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is availability. The summary by CVE is:

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Affected versions of squid are subject to a a Use-After-Free bug which can lead to a Denial of Service attack via collapsed forwarding. All versions of Squid from 3.5 up to and including 5.9 configured with "collapsed_forwarding on" are vulnerable. Configurations with "collapsed_forwarding off" or without a "collapsed_forwarding" directive are not vulnerable. This bug is fixed by Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade should remove all collapsed_forwarding lines from their squid.conf.

The weakness was released 12/05/2023 as GHSA-rj5h-46j6-q2g5. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-49288 since 11/24/2023. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/23/2023).

Upgrading to version 6.0.1 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 8.6
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Proxy 6.0.1

Timelineinfo

11/24/2023 🔍
12/05/2023 +11 days 🔍
12/05/2023 +0 days 🔍
12/23/2023 +18 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: GHSA-rj5h-46j6-q2g5
Status: Confirmed

CVE: CVE-2023-49288 (🔍)
GCVE (CVE): GCVE-0-2023-49288
GCVE (VulDB): GCVE-100-246851

Entryinfo

Created: 12/05/2023 08:29
Updated: 12/23/2023 13:55
Changes: 12/05/2023 08:29 (52), 12/05/2023 13:40 (1), 12/23/2023 13:55 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

 Anonymous User (+0)
3 years ago
Good morning
Could you check the CPE for the lack of ":" before the impacted version?
We would appreciate it very much.
Best regards,
TEAM Cert
 VulDB Community Team3 years ago
Thank you, we have just fixed the CPE.

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