A malformed request can trigger an assertion failure in badcache.c
Published Jan 16, 2019
7.5
HIGHCVSS 3.0
EPSS 6.29%
Description
While handling a particular type of malformed packet BIND erroneously selects a SERVFAIL rcode instead of a FORMERR rcode. If the receiving view has the SERVFAIL cache feature enabled, this can trigger an assertion failure in badcache.c when the request doesn't contain all of the expected information. Affects BIND 9.10.5-S1 to 9.10.5-S4, 9.10.6-S1, 9.10.6-S2.
Affected products
-
- Version 9.10.5-S1 to 9.10.5-S4, 9.10.6-S1, 9.10.6-S2StatusaffectedConstraints-
- Version
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
Red Hat Enterprise Linux 8
bind99
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 |
| Red Hat Enterprise Linux 8 | bind99 | Not affected | n/a |
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade to the patched release.
No publicly released versions of BIND are affected
BIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.
BIND 9 version 9.10.6-S3
Red Hat statement
This issue did not affect the versions of bind as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include the vulnerable code.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
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 (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.29% (0.06287) | 93.38th | v5 (v2026.06.15) |
| Jun 23, 2026 | 6.24% (0.06236) | 92.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.55% (0.08550) | 94.35th | v5 (v2026.06.15) |
| Apr 15, 2026 | 5.24% (0.05241) | 89.98th | v4 (v2025.03.14) |
| Dec 17, 2025 | 7.26% (0.07264) | 91.31th | v4 (v2025.03.14) |
| Mar 30, 2025 | 8.70% (0.08697) | 91.64th | v4 (v2025.03.14) |
| Mar 29, 2025 | 22.59% (0.22593) | 93.29th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.70% (0.08697) | 91.83th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.95% (0.00951) | 83.35th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.95% (0.00951) | 82.66th | v3 (v2023.03.01) |
| Jan 10, 2024 | 3.15% (0.03153) | 90.13th | v3 (v2023.03.01) |
| Jun 14, 2023 | 3.73% (0.03730) | 90.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.91% (0.03911) | 90.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.63% (0.01626) | 75.89th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.63% (0.01626) | 75.84th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.63% (0.01626) | 73.79th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.63% (0.01626) | 52.68th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v1 |
| Jan 6, 2022 | 1.04% (0.01040) | 27.69th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (9)
- http://www.securityfocus.com/bid/103189 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040438 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-5734 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1550602 Issue Tracking
- https://kb.isc.org/article/AA-01562/
- https://kb.isc.org/docs/aa-01562 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-5734
- https://security.netapp.com/advisory/ntap-20180926-0005/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-5734
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/103189 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1040438 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-5734 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1550602 | Issue Tracking | |
| https://kb.isc.org/article/AA-01562/ | ||
| https://kb.isc.org/docs/aa-01562 | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-5734 | ||
| https://security.netapp.com/advisory/ntap-20180926-0005/ | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-5734 |
Change history (0)
No recorded changes yet.