7.5

CVE-2017-15120: debian debian_linux NULL Pointer Dereference

CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2017-15120DEBIAN-CVE-2017-15120DSA-4063-1
Published 27-07-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2017-15120 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 51.35% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (CVE.org)
EPSS score
51.35%
0%100%
Critical · -0.44 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 27-07-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

51.35%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

-0.44 pp

From 51.79% on 20-09-2026

20-09-202620-10-2026
EPSS score
51.35%

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

Debian2 products
  • pdns-recursor< 4.1.0-1 | < 4.0.4-1+deb9u3
  • debian_linuxEOL8.0 | 9.0
Powerdns2 products
Ubuntu1 product
  • pdns-recursorAll versions (No fix recorded)

3 vendors · 5 products

References

8 links