GnuPG libksba File Parser stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in GnuPG libksba. The impacted element is an unknown function of the component File Parser. Executing a manipulation can lead to stack-based overflow. The identification of this vulnerability is CVE-2022-3515. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in GnuPG libksba (affected version unknown). It has been declared as critical. This vulnerability affects an unknown functionality of the component File Parser. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for code execution on the target system by passing specially crafted data to the application, for example, a malicious S/MIME attachment.

The weakness was shared 10/25/2022 as ZDI-22-1465. The advisory is shared for download at zerodayinitiative.com. This vulnerability was named CVE-2022-3515 since 10/14/2022. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211112 (Fedora 37 : libksba (2022-0002284730)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211112). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / 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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Nessus ID: 211112
Nessus Name: Fedora 37 : libksba (2022-0002284730)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/14/2022 🔍
10/25/2022 +11 days 🔍
10/25/2022 +0 days 🔍
04/28/2025 +916 days 🔍

Sourcesinfo

Advisory: ZDI-22-1465
Status: Confirmed

CVE: CVE-2022-3515 (🔍)
GCVE (CVE): GCVE-0-2022-3515
GCVE (VulDB): GCVE-100-212164

Entryinfo

Created: 10/25/2022 15:07
Updated: 04/28/2025 21:03
Changes: 10/25/2022 15:07 (38), 11/17/2024 06:17 (16), 04/08/2025 18:24 (13), 04/28/2025 21:03 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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