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CVE-2013-4548: openbsd openssh

CVSS: 6.0v2.0MediumModified
AliasesDEBIAN-CVE-2013-4548
Published 08-11-2013Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2013-4548 is a medium (CVSS 6.0) vulnerability in openbsd openssh. EPSS estimates a 2.67% chance of exploitation in the next 30 days, higher than 85.5% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.0/10
010
Medium · v2.0 (NVD)
EPSS score
2.67%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-11-2013
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The mm_newkeys_from_blob function in monitor_wrap.c in sshd in OpenSSH 6.2 and 6.3, when an AES-GCM cipher is used, does not properly initialize memory for a MAC context data structure, which allows remote authenticated users to bypass intended ForceCommand and login-shell restrictions via packet data that provides a crafted callback address.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.67%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.67% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • openssh< 1:6.4p1-1
Openbsd1 product

2 vendors · 2 products

References

6 links