A specially crafted packet can cause named to leak memory
Published Oct 9, 2019
7.5
HIGHCVSS 3.1
EPSS 3.38%
Description
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.
Affected products
-
- Version 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.StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ISC | BIND 9 | n/a |
|
- ≥ 9.10.7 · < 9.10.8
- ≥ 9.11.3 · < 9.11.5
- ≥ 9.12.0 · < 9.12.3
- ≥ 9.13.0 · < 9.13.6
- 9.10.7
- 9.10.8
- 9.10.8
- 9.10.8
- 9.10.8
- 9.11.5
- 9.11.5
- 9.11.5
- 9.11.5
- 9.12.3
- 9.12.3
- 9.12.3
No data.
Red Hat Enterprise Linux 5
bind
Not affected
Red Hat Enterprise Linux 5
bind97
Not affected
Red Hat Enterprise Linux 6
bind
Not affected
Red Hat Enterprise Linux 7
bind
Not affected
Red Hat Enterprise Linux 8
bind
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | bind | Not affected | n/a |
| Red Hat Enterprise Linux 5 | bind97 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | bind | Not affected | n/a |
| Red Hat Enterprise Linux 7 | bind | Not affected | n/a |
| Red Hat Enterprise Linux 8 | bind | Not affected | n/a |
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade to a version of BIND containing a fix for the memory leak.
>= BIND 9.11.5-P4 >= BIND 9.12.3-P4
Red Hat statement
Versions of bind package shipped with Red Hat Enterprise Linux 5, 6, and 7 did not ship the vulnerable code and therefore are not affected by this flaw. For more details please refer to: https://bugzilla.redhat.com/show_bug.cgi?id=1679299#c7
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.38% (0.03381) | 88.39th | v5 (v2026.06.15) |
| Jun 23, 2026 | 3.35% (0.03353) | 87.12th | v5 (v2026.06.15) |
| Jun 15, 2026 | 9.09% (0.09086) | 94.62th | v5 (v2026.06.15) |
| Mar 30, 2025 | 4.47% (0.04466) | 88.05th | v4 (v2025.03.14) |
| Mar 29, 2025 | 13.45% (0.13452) | 90.32th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.47% (0.04466) | 88.34th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.52% (0.02516) | 90.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.52% (0.02516) | 88.46th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.42% (0.00416) | 10.04th | v1 |
| Jan 6, 2022 | 0.42% (0.00416) | 9.79th | v1 |
| Sep 1, 2021 | 0.42% (0.00416) | 25.53th | v1 |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (5)
- https://access.redhat.com/security/cve/CVE-2018-5744 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1679299 Issue Tracking
- https://kb.isc.org/docs/cve-2018-5744 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-5744
- https://www.cve.org/CVERecord?id=CVE-2018-5744
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-5744 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1679299 | Issue Tracking | |
| https://kb.isc.org/docs/cve-2018-5744 | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-5744 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-5744 |
Change history (0)
No recorded changes yet.