A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.
Published 2023-01-12 15:15:10
Updated 2024-04-22 16:15:12
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: OverflowDenial of service

Threat overview for CVE-2022-3437

Top countries where our scanners detected CVE-2022-3437
Top open port discovered on systems with this issue 445
IPs affected by CVE-2022-3437 115,960
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2022-3437!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2022-3437

1.00%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 84 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-3437

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
NIST

CWE ids for CVE-2022-3437

  • A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
    Assigned by: secalert@redhat.com (Primary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: secalert@redhat.com (Secondary)

References for CVE-2022-3437

Products affected by CVE-2022-3437

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