Use-after-free vulnerability in ISC BIND 9.3.0 up to 9.3.3, 9.4.0a1 up to 9.4.0a6…
Priority MEDIUM 48Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
Use-after-free vulnerability in ISC BIND 9.3.0 up to 9.3.3, 9.4.0a1 up to 9.4.0a6, 9.4.0b1 up to 9.4.0b4, 9.4.0rc1, and 9.5.0a1 (Bind Forum only) allows remote attackers to cause a denial of service (named daemon crash) via unspecified vectors that cause named to "dereference a freed fetch context."
Why it matters now
EPSS 0.12768 96th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:isc:bind:9.3.0:*:*:*:*:*:*:* | 9.3.0 | Vulnerable | ISC |
| cpe:2.3:a:isc:bind:9.3.1:*:*:*:*:*:*:* | 9.3.1 | Vulnerable | ISC |
| cpe:2.3:a:isc:bind:9.3.2:*:*:*:*:*:*:* | 9.3.2 | Vulnerable | ISC |
| cpe:2.3:a:isc:bind:9.4.0:*:*:*:*:*:*:* | 9.4.0 | Vulnerable | ISC |
| cpe:2.3:a:isc:bind:9.4.0:rc1:*:*:*:*:*:* | 9.4.0 rc1 | Vulnerable | ISC |
| cpe:2.3:a:isc:bind:9.5.0:*:*:*:*:*:*:* | 9.5.0 | Vulnerable | ISC |
- cpe:2.3:a:isc:bind:9.3.0:*:*:*:*:*:*:* Versions 9.3.0 Vulnerable ·ISC
- cpe:2.3:a:isc:bind:9.3.1:*:*:*:*:*:*:* Versions 9.3.1 Vulnerable ·ISC
- cpe:2.3:a:isc:bind:9.3.2:*:*:*:*:*:*:* Versions 9.3.2 Vulnerable ·ISC
- cpe:2.3:a:isc:bind:9.4.0:*:*:*:*:*:*:* Versions 9.4.0 Vulnerable ·ISC
- cpe:2.3:a:isc:bind:9.4.0:rc1:*:*:*:*:*:* Versions 9.4.0 rc1 Vulnerable ·ISC
- cpe:2.3:a:isc:bind:9.5.0:*:*:*:*:*:*:* Versions 9.5.0 Vulnerable ·ISC
Remediation
Red Hat 1 advisory
- RHSA-2007:0057 Released 2007-03-14 · Red Hat rating Moderatebind security update
- Red Hat Enterprise Linux (v. 5 server) bind-30:9.3.3-8.el5, bind-30:9.3.3-8.el5.i386, bind-30:9.3.3-8.el5.ia64 +29
- Red Hat Enterprise Linux Desktop (v. 5 client) bind-30:9.3.3-8.el5, bind-30:9.3.3-8.el5.i386, bind-libs-30:9.3.3-8.el5 +5
- Red Hat Enterprise Linux Desktop Workstation (v. 5 client) bind-30:9.3.3-8.el5, bind-chroot-30:9.3.3-8.el5, bind-chroot-30:9.3.3-8.el5.i386 +6
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2007:0057 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2007:0057 |
| Red Hat Enterprise Linux Desktop Workstation (v. 5 client) | Fixed | RHSA-2007:0057 |
Timeline
- 2026-10-02 Threatist record created from CVE-2007-0493
- 2026-10-03 Alias added: GHSA-p6fj-c7mp-96mv
References
Patch 2
Advisory 15
Other 12
- http://docs.info.apple.com/article.html?artnum=305530
- ADV-2007-1939
- ADV-2007-2163
- http://www.isc.org/index.pl?/sw/bind/bind-security.php
- ADV-2007-2315
- https://issues.rpath.com/browse/RPL-989
- https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04952488
- [bind-announce] 20070125 Internet Systems Consortium Security Advisory.
- ADV-2007-1401
- ADV-2007-0349
- 20070125 BIND remote exploit (low severity) [Fwd: Internet Systems Consortium Security Advisory.]
- oval:org.mitre.oval:def:9614
More ISC Bind vulnerabilities
- TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
- TI-2023-27571 Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related… CVSS 3.1HIGH 7.5
- TI-2021-07476 A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack CVSS 3.1CRITICAL 9.8
- TI-2023-27773 The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance… CVSS 3.1HIGH 7.5
- TI-2020-06910 A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c CVSS 3.1HIGH 7.5
- TI-2016-02320 buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x… CVSS 3.0HIGH 7.5
Sources
- CVE-2007-0493 · CVE Program
- CVE-2007-0493 · NVD
- FIRST EPSS
- GHSA-p6fj-c7mp-96mv · GitHub Advisory Database · CC BY 4.0
- CVE-2007-0493 · Red Hat security data · CC BY 4.0
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