CVE-2018-1046: powerdns pdns Stack-based Buffer Overflow
Vulnerability summary
CVE-2018-1046 is a high (CVSS 9.3) Stack-based Buffer Overflow vulnerability in powerdns pdns. EPSS estimates a 1.41% chance of exploitation in the next 30 days, higher than 72.6% of scored vulnerabilities.
Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 16-07-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
pdns before version 4.1.2 is vulnerable to a buffer overflow in dnsreplay. In the dnsreplay tool provided with PowerDNS Authoritative, replaying a specially crafted PCAP file can trigger a stack-based buffer overflow, leading to a crash and potentially arbitrary code execution. This buffer overflow only occurs when the -ecs-stamp option of dnsreplay is used.
CVSS metrics
7 scores · 4 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST7.0HighCVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.3HighCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
1.41%
Chance of exploitation in the next 30 days
Percentile
73%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.41% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Suse3 products
- pdns&distro=HPE Helion OpenStack 8< 4.1.2-3.3.1
- pdns&distro=SUSE OpenStack Cloud 8< 4.1.2-3.3.1
- pdns&distro=SUSE Package Hub 12 SP1< 4.1.2-8.1
[unknown]1 product
- pdnspdns 4.1.2
Debian1 product
- pdns< 4.1.2-1
Mageia1 product
- pdns< 4.1.2-1.mga6
Powerdns1 product
- pdns< 4.1.2
Ubuntu1 product
- pdns< 4.1.1-1ubuntu0.1~esm1
6 vendors · 8 products
References
14 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1046X Refsource CONFIRMIssue TrackingPatchThird Party Advisory
- lists.opensuse.org/archives/…Advisory
