7.8

CVE-2011-1527: mit kerberos_5 Improper Input Validation

CVSS: 7.8v2.0HighModified
AliasesDEBIAN-CVE-2011-1527
Published 20-10-2011Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2011-1527 is a high (CVSS 7.8) Improper Input Validation vulnerability in mit kerberos_5. EPSS estimates a 3.65% chance of exploitation in the next 30 days, higher than 89.4% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
3.65%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
OPENSUSE-SU-2024:10004-1RHSA-2011:1379

Timeline

  1. 20-10-2011
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

3.65%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

0.00 pp

From 3.65% on 20-09-2026

20-09-202620-10-2026
EPSS score
3.65%

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
  • krb5< 1.10+dfsg~alpha1-1
Mit1 product

2 vendors · 2 products

References

6 links