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CVE-2017-9103

31
FAUCET Score

CVE-2017-9103 is a critical vulnerability in adns before version 1.5.2, affecting various distributions including Fedora, openSUSE, and GNU adns. It stems from improper validation in the pap_mailbox822 function, leading to the use of uninitialized stack values. This flaw allows attackers to potentially crash programs, leak memory contents, cause excessive memory allocation, or trigger buffer overruns, specifically when applications make non-raw queries for SOA or RP records. With a CVSS score of 9.8 (CRITICAL), this vulnerability has a network attack vector and low attack complexity, requiring no user interaction. The potential impact is high across confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. The vulnerability has garnered minimal community discussion and media coverage, indicating a low level of public attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.5.2CPE matchmatch criteria
cpe:2.3:a:gnu:adns:*:*:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.05%
Probability of exploitation in next 30 days
EPSS Percentile
79.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0205 is in the 68th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.opensuse.org / opensuse-security-announce/2020-06/msg00037.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/TRVHN3GGVNQWAOL3PWC5FLAV7HUESLZR
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UGFZ4SPV6KFQK6ZNUZFB5Y32OYFOM5YJ
chiark.greenend.org.uk / pipermail/adns-announce/2020/000004.html
Release NotesThird Party Advisory
chiark.greenend.org.uk / ucgi/~ianmdlvl/git
Third Party Advisory
chiark.greenend.org.uk / ucgi/~ianmdlvl/git