Home/CVE/A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can
CVE

CVE-2022-3515

A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can

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.

CRITICAL · CVSS 9.8 EPSS 0.00164
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules3 YARA rules0
⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
CWE-190Integer Overflow or Wraparound
▤

Affected Products & Versions

5
gnupg libksba< 1.6.3
gpg4win>= 2.0.0 and < 4.1.0
gnupg vs-desktop>= 3.1.16 and < 3.1.26
gnupg>= 2.1.0 and < 2.2.41
gnupg>= 2.3.0 and < 2.4.0
⚠

Public Exploits & PoCs

2
pocbugzilla.redhat.com · show_bug.cgi?id=2135610bugzilla.redhat.com
pocdev.gnupg.org · rK4b7d9cd4a018898d7714ce06f3faf2626c14582bdev.gnupg.org
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighFile Encryption/Decryption Via Gpg4win From Suspicious Locations
productmediumFile Decryption Using Gpg4win
productmediumFile Encryption Using Gpg4win
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Jan 2023 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

17
suse-csafopenSUSE-SU-2024:12418-1
siemens-csafSSA-455250
siemens-csafSSA-806742
msrcCVE-2022-3515
usnUSN-5688-2
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2022-3515PatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20230706-0008/
https://www.gnupg.org/blog/20221017-pepe-left-the-ksba.htmlThird Party Advisory
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin