Improper fetch cleanup sequencing in the resolver can cause named to crash

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• debian debian linux7.0
• debian debian linux8.0
• debian debian linux9.0
• isc bind9.11.0 and later · up to 9.11.2 inclusive
• isc bind9.9.0 and later · up to 9.9.11 inclusive
• isc bind9.4.0 and later · up to 9.8.8 inclusive
• isc bind9.10.0 and later · up to 9.10.6 inclusive
• isc bind9.10.5
• isc bind9.10.6
• isc bind9.12.0
• isc bind9.9.11
• isc bind9.9.3
• juniper junos12.1x46-d76
• juniper junos12.3x48-d70
• juniper junos15.1x49-d140
• juniper junos17.4r2
• juniper junos18.1r2
• juniper junos18.2r1
• netapp data ontap edgeall versions
• redhat enterprise linux desktop6.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (isc). Independent of NVD's CPE analysis and usually ahead of it.

• ISC BIND 9

  • 9.0.0 to 9.8.x, 9.9.0 to 9.9.11, 9.10.0 to 9.10.6, 9.11.0 to 9.11.2, 9.9.3-S1 to 9.9.11-S1, 9.10.5-S1 to 9.10.6-S1, 9.12.0a1 to 9.12.0rc1affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2015-5477named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion fa
  58Plan
• CVE-2016-2776buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x before 9.11.0rc3 does not properly construct responses,
  57Plan
• CVE-2016-1286named in ISC BIND 9.x before 9.9.8-P4 and 9.10.x before 9.10.3-P4 allows remote attackers to cause a denial of service (assertion failure an
  53Plan
• CVE-2020-8625A vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack
  51Plan
• CVE-2020-8617A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c
  51Plan
• CVE-2001-0010Buffer overflow in transaction signature (TSIG) handling code in BIND 8 allows remote attackers to gain root privileges.
  49Plan

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.