CVE-2020-24696: powerdns authoritative Race Condition
CVSS: 8.1v3.1HighModified
AliasesDEBIAN-CVE-2020-24696
Published 02-10-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-24696 is a high (CVSS 8.1) Race Condition vulnerability in powerdns authoritative. EPSS estimates a 1.36% chance of exploitation in the next 30 days, higher than 71.3% of scored vulnerabilities.
CVSS score
8.1/10
010
High · v3.1 (NVD)EPSS score
1.36%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 02-10-2020PublishedVulnerability first disclosed.
- 04-08-2024Last 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 can trigger a race condition 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 versionsHigh 8.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Medium 5.1Preferred score · NVD (NIST)
AV:N/AC:H/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.36%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
0.00 pp
From 1.36% on 20-09-2026
20-09-202620-10-2026
EPSS score1.36%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- pdns< 4.4.0-1
Powerdns1 product
- authoritative≤ 4.3.0
2 vendors · 2 products
References
2 links- doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-06.htmlX Refsource MISCVendor Advisory
