9.8

CVE-2020-24698: powerdns authoritative Double Free

CVSS: 9.8v3.1CriticalModified
AliasesDEBIAN-CVE-2020-24698
Published 02-10-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-24698 is a critical (CVSS 9.8) Double Free vulnerability in powerdns authoritative. EPSS estimates a 3.16% chance of exploitation in the next 30 days, higher than 87.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
3.16%
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 0 · Related 1
UBUNTU-CVE-2020-24698

Timeline

  1. 02-10-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker might be able to cause a double-free, leading to a crash or possibly arbitrary code execution. by sending crafted queries with a GSS-TSIG signature.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

3.16%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

0.00 pp

From 3.16% on 20-09-2026

20-09-202620-10-2026
EPSS score
3.16%

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
  • pdns< 4.4.0-1
Powerdns1 product

2 vendors · 2 products

References

2 links