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CVE-2018-5744

A specially crafted packet can cause named to leak memory

7.5 HighFix available

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

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
None
Integrity
None
Availability
High

Exploit likelihood

3.45%Up 3.0 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 7.5

A specially crafted packet can cause named to leak memory

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Record
CVE-2018-5744
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
EUVDEUVD-2018-17513 7.5

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Record
EUVD-2018-17513
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-xcc7-r4h9-f7ph 7.5

A failure to free memory can occur when processing messages having a specific combination of EDNS...

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Record
GHSA-xcc7-r4h9-f7ph
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-772
Updated
2026-11-02
NVD 7.5

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Record
CVE-2018-5744
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-772
Updated
2026-11-02
OSVALPINE-CVE-2018-5744 7.5

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Record
ALPINE-CVE-2018-5744
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBELL-CVE-2018-5744 7.5

CVE-2018-5744 does not affect BellSoft software

Record
BELL-CVE-2018-5744
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 4 moreShow less
OSV 7.5

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Record
CVE-2018-5744
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-5744 7.5

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Record
DEBIAN-CVE-2018-5744
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-5744 7.5

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Record
UBUNTU-CVE-2018-5744
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUSN-3893-1 No score

bind9 vulnerabilities

Toshifumi Sakaguchi discovered that Bind incorrectly handled memory. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-5744)

It was discovered that Bind incorrectly handled certain trust anchors when used with the "managed-keys" feature. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2018-5745)

It was discovered that Bind incorrectly handled certain controls for zone transfers, contrary to expectations. (CVE-2019-6465)

Record
USN-3893-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
bind
Alpine:v3.10
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.11
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.12
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.13
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.14
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.15
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.16
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.17
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.18
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.19
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
Show 16 moreShow less
Affected packages
PackageAffectedFixed
bind
Alpine:v3.20
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.21
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.22
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.23
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.24
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.6
 9.10.7 up to 9.11.5_p4-r0
9.11.5_p4-r0
bind
Alpine:v3.7
 9.10.7 up to 9.11.5_p4-r0
9.11.5_p4-r0
bind
Alpine:v3.8
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind
Alpine:v3.9
 9.10.7 up to 9.12.3_p4-r0
9.12.3_p4-r0
bind9
Debian:12
 before 1:9.11.5.P4+dfsg-1
1:9.11.5.P4+dfsg-1
bind9
Debian:13
 before 1:9.11.5.P4+dfsg-1
1:9.11.5.P4+dfsg-1
bind9
Debian:14
 before 1:9.11.5.P4+dfsg-1
1:9.11.5.P4+dfsg-1
bind9
Ubuntu:18.04:LTS
 before 1:9.11.3+dfsg-1ubuntu1.5, plus listed versions
1:9.10.3.dfsg.P4-12.6ubuntu11:9.11.2.P1-1ubuntu21:9.11.2.P1-1ubuntu31:9.11.2.P1-1ubuntu41:9.11.2.P1-1ubuntu5
Show 4 moreShow less
1:9.11.3+dfsg-1ubuntu11:9.11.3+dfsg-1ubuntu1.11:9.11.3+dfsg-1ubuntu1.21:9.11.3+dfsg-1ubuntu1.3
1:9.11.3+dfsg-1ubuntu1.5
bind9
Ubuntu:14.04:LTS
From an advisory covering 3 CVEs
 before 1:9.9.5.dfsg-3ubuntu0.19, plus listed versions
1:9.9.3.dfsg.P2-4ubuntu11:9.9.3.dfsg.P2-4ubuntu21:9.9.3.dfsg.P2-4ubuntu31:9.9.5.dfsg-21:9.9.5.dfsg-3
Show 18 moreShow less
1:9.9.5.dfsg-3ubuntu0.11:9.9.5.dfsg-3ubuntu0.21:9.9.5.dfsg-3ubuntu0.31:9.9.5.dfsg-3ubuntu0.41:9.9.5.dfsg-3ubuntu0.51:9.9.5.dfsg-3ubuntu0.61:9.9.5.dfsg-3ubuntu0.71:9.9.5.dfsg-3ubuntu0.81:9.9.5.dfsg-3ubuntu0.91:9.9.5.dfsg-3ubuntu0.101:9.9.5.dfsg-3ubuntu0.111:9.9.5.dfsg-3ubuntu0.121:9.9.5.dfsg-3ubuntu0.131:9.9.5.dfsg-3ubuntu0.141:9.9.5.dfsg-3ubuntu0.151:9.9.5.dfsg-3ubuntu0.161:9.9.5.dfsg-3ubuntu0.171:9.9.5.dfsg-3ubuntu0.18
1:9.9.5.dfsg-3ubuntu0.19
bind9
Ubuntu:16.04:LTS
From an advisory covering 3 CVEs
 before 1:9.10.3.dfsg.P4-8ubuntu1.12, plus listed versions
1:9.9.5.dfsg-11ubuntu11:9.9.5.dfsg-121:9.9.5.dfsg-12.11:9.9.5.dfsg-12.1ubuntu11:9.10.3.dfsg.P2-4
Show 17 moreShow less
1:9.10.3.dfsg.P2-51:9.10.3.dfsg.P4-31:9.10.3.dfsg.P4-41:9.10.3.dfsg.P4-51:9.10.3.dfsg.P4-81:9.10.3.dfsg.P4-8ubuntu11:9.10.3.dfsg.P4-8ubuntu1.11:9.10.3.dfsg.P4-8ubuntu1.21:9.10.3.dfsg.P4-8ubuntu1.31:9.10.3.dfsg.P4-8ubuntu1.41:9.10.3.dfsg.P4-8ubuntu1.51:9.10.3.dfsg.P4-8ubuntu1.61:9.10.3.dfsg.P4-8ubuntu1.71:9.10.3.dfsg.P4-8ubuntu1.81:9.10.3.dfsg.P4-8ubuntu1.91:9.10.3.dfsg.P4-8ubuntu1.101:9.10.3.dfsg.P4-8ubuntu1.11
1:9.10.3.dfsg.P4-8ubuntu1.12
bind9
Ubuntu:18.04:LTS
From an advisory covering 3 CVEs
 before 1:9.11.3+dfsg-1ubuntu1.5, plus listed versions
1:9.10.3.dfsg.P4-12.6ubuntu11:9.11.2.P1-1ubuntu21:9.11.2.P1-1ubuntu31:9.11.2.P1-1ubuntu41:9.11.2.P1-1ubuntu5
Show 4 moreShow less
1:9.11.3+dfsg-1ubuntu11:9.11.3+dfsg-1ubuntu1.11:9.11.3+dfsg-1ubuntu1.21:9.11.3+dfsg-1ubuntu1.3
1:9.11.3+dfsg-1ubuntu1.5

History

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

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

In short

CVE-2018-5744 is a high vulnerability (CVSS 7.5) in Isc Bind, published February 21, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.45%, the 89th percentile. Fixed in bind 9.12.3_p4-r0.

References

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