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CVE-2017-9103

An issue was discovered in adns before 1.5.2. pap_mailbox822 does not properly check st from...

9.8 CriticalFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.35%Up 0.9 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

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.

Record
CVE-2017-9103
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-119
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2017-9103
Updated
2026-11-02
EUVDEUVD-2017-18041 No score

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.

Record
EUVD-2017-18041
Updated
2026-11-03
GitHub AdvisoriesGHSA-q936-xr3r-7gqr 9.8

An issue was discovered in adns before 1.5.2. pap_mailbox822 does not properly check st from...

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.

Record
GHSA-q936-xr3r-7gqr
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-119
Updated
2026-11-02
OSV 9.8

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.

Record
CVE-2017-9103
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2017-9103 9.8

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.

Record
DEBIAN-CVE-2017-9103
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 5 moreShow less
OSVUBUNTU-CVE-2017-9103 9.8

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.

Record
UBUNTU-CVE-2017-9103
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2020:0827-1 No score

Security update for adns

This update for adns fixes the following issues:

  • CVE-2017-9103,CVE-2017-9104,CVE-2017-9105,CVE-2017-9109: Fixed an issue in local recursive resolver which could have led to remote code execution (bsc#1172265).
  • CVE-2017-9106: Fixed an issue with upstream DNS data sources which could have led to denial of service (bsc#1172265).
  • CVE-2017-9107: Fixed an issue when quering domain names which could have led to denial of service (bsc#1172265).
  • CVE-2017-9108: Fixed an issue which could have led to denial of service (bsc#1172265).

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:0827-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10612-1 No score

adns-1.6.0-1.8 on GA media

These are all security issues fixed in the adns-1.6.0-1.8 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10612-1
Updated
2026-11-02
OSVSUSE-SU-2020:14399-1 No score

Security update for adns

This update for adns fixes the following issues:

  • CVE-2017-9103,CVE-2017-9104,CVE-2017-9105,CVE-2017-9109: Fixed an issue in local recursive resolver which could have led to remote code execution (bsc#1172265).
  • CVE-2017-9106: Fixed an issue with upstream DNS data sources which could have led to denial of service (bsc#1172265).
  • CVE-2017-9107: Fixed an issue when quering domain names which could have led to denial of service (bsc#1172265).
  • CVE-2017-9108: Fixed an issue which could have led to denial of service (bsc#1172265).
Record
SUSE-SU-2020:14399-1
Updated
2026-11-02
OSVSUSE-SU-2020:1612-1 No score

Security update for adns

This update for adns fixes the following issues:

  • CVE-2017-9103,CVE-2017-9104,CVE-2017-9105,CVE-2017-9109: Fixed an issue in local recursive resolver which could have led to remote code execution (bsc#1172265).
  • CVE-2017-9106: Fixed an issue with upstream DNS data sources which could have led to denial of service (bsc#1172265).
  • CVE-2017-9107: Fixed an issue when quering domain names which could have led to denial of service (bsc#1172265).
  • CVE-2017-9108: Fixed an issue which could have led to denial of service (bsc#1172265).
Record
SUSE-SU-2020:1612-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
adns
Debian:12
before 1.6.0-2
1.6.0-2
adns
Debian:13
before 1.6.0-2
1.6.0-2
adns
Debian:14
before 1.6.0-2
1.6.0-2
adns
SUSE:Linux Enterprise Point of Sale 11 SP3
before 1.4-75.3.1
1.4-75.3.1
adns
SUSE:Linux Enterprise Server 11 SP4-LTSS
before 1.4-75.3.1
1.4-75.3.1
adns
SUSE:HPE Helion OpenStack 8
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:OpenStack Cloud 7
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:OpenStack Cloud 8
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:OpenStack Cloud Crowbar 8
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
before 1.4-103.3.1
1.4-103.3.1
Show 16 moreShow less
Affected packages
PackageAffectedFixed
adns
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Software Development Kit 12 SP4
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Software Development Kit 12 SP5
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Server 12 SP2-LTSS
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Server 12 SP2-BCL
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Server 12 SP3-LTSS
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Server 12 SP3-BCL
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Server 12 SP4
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Server 12 SP5
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
before 1.4-103.3.1
1.4-103.3.1
adns
SUSE:Enterprise Storage 5
before 1.4-103.3.1
1.4-103.3.1
adns
Ubuntu:16.04:LTS
All versions, plus listed versions
1.5.0~rc1-1ubuntu1
None known
adns
Ubuntu:18.04:LTS
All versions, plus listed versions
1.5.0~rc1-1ubuntu11.5.0~rc1-1.1ubuntu1
None known
adns
Ubuntu:20.04:LTS
All versions, plus listed versions
1.5.1-0.1
None known
adns
openSUSE:Leap 15.1
before 1.5.1-lp151.3.3.1
1.5.1-lp151.3.3.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-9103 is a critical vulnerability (CVSS 9.8) in Gnu Adns, published June 12, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.35%, the 83rd percentile. Fixed in adns 1.6.0-2.

References

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