6.5

CVE-2018-5710: mit kerberos NULL Pointer Dereference

CVSS: 6.5v3.0MediumModified
AliasesALPINE-CVE-2018-5710UBUNTU-CVE-2018-5710DEBIAN-CVE-2018-5710
Published 16-01-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-5710 is a medium (CVSS 6.5) NULL Pointer Dereference vulnerability in mit kerberos. EPSS estimates a 1.80% chance of exploitation in the next 30 days, higher than 78.1% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.0 (NVD)
EPSS score
1.80%
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 3
DLA-1643-1DLA-2771-1MGASA-2018-0155

Timeline

  1. 16-01-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. The pre-defined function "strlen" is getting a "NULL" string as a parameter value in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the Key Distribution Center (KDC), which allows remote authenticated users to cause a denial of service (NULL pointer dereference) via a modified kadmin client.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.80%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

0.00 pp

From 1.80% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.80%

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

Alpine1 product
  • krb5< 1.15.3-r0
Debian1 product
  • krb5< 1.16.1-1
Mit1 product
Ubuntu1 product
  • krb5< 1.12+dfsg-2ubuntu5.4 | < 1.13.2+dfsg-5ubuntu2.1 | < 1.16-2ubuntu0.1

4 vendors · 4 products

References

6 links