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Fencer Vulns
critical 9.8

CVE-2017-9103 json

An issue was discovered in adns before 1.5.2.

published 2020-06-18 6 y ago modified 2026-06-17 4 mo ago also EUVD-2017-18041

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

An issue was discovered in adns before 1.5.2. pap_mailbox822 does not properly check st from adns__findlabel_next. Without this, an uninitialised stack value can be used as the first label length. Depending on the circumstances, an attacker might be able to trick adns into crashing the calling program, leaking aspects of the contents of some of its memory, causing it to allocate lots of memory, or perhaps overrunning a buffer. This is only possible with applications which make non-raw queries for SOA or RP records.

Patch / fix

  • gnu adns 1.5.2
  • adns Debian 14, Debian 13, Debian 12 1.6.0-2

debian advisories DEBIAN-CVE-2017-9103

  • adns SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 1.4-75.3.1
  • adns SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +14 more 1.4-103.3.1

suse advisories SUSE-SU-2020:14399-1SUSE-SU-2020:1612-1

  • adns openSUSE Leap 15.1 1.5.1-lp151.3.3.1

opensuse advisories openSUSE-SU-2020:0827-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-9103 updated cvss 9.8

adns: pap_mailbox822 does not properly check st from adns__findlabel_next

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.35% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.