cbcvebase.
CVE-2013-4854
published 2013-07-29

CVE-2013-4854: The RFC 5011 implementation in rdata.c in ISC BIND 9.7.x and 9.8.x before 9.8.5-P2, 9.8.6b1, 9.9.x before 9.9.3-P2, and 9.9.4b1, and DNSco BIND 9.9.3-S1 before…

PriorityP271high7.8CVSS 2.0
AVNACLAuNCNINAC
ITWVulnCheck KEV
Exploited in the wild
EPSS
34.15%
98.2th percentile
The RFC 5011 implementation in rdata.c in ISC BIND 9.7.x and 9.8.x before 9.8.5-P2, 9.8.6b1, 9.9.x before 9.9.3-P2, and 9.9.4b1, and DNSco BIND 9.9.3-S1 before 9.9.3-S1-P1 and 9.9.4-S1b1, allows remote attackers to cause a denial of service (assertion failure and named daemon exit) via a query with a malformed RDATA section that is not properly handled during construction of a log message, as exploited in the wild in July 2013.

Affected

49 ranges· showing 25
VendorProductVersion rangeFixed in
debianbind9< bind9 1:9.8.4.dfsg.P1-6+nmu3 (bookworm)bind9 1:9.8.4.dfsg.P1-6+nmu3 (bookworm)
fedoraprojectfedora
fedoraprojectfedora
freebsdfreebsd
freebsdfreebsd
freebsdfreebsd
freebsdfreebsd
freebsdfreebsd
freebsdfreebsd
freebsdfreebsd
freebsdfreebsd
hphp-ux
iscbind
iscbind
iscbind
iscbind
iscbind
iscbind
iscbind
iscbind
iscbind
iscbind
iscbind
iscbind
iscbind

Detection & IOCsextracted from sources · hover to see the quote

  • The vulnerability is triggered by a specially crafted DNS query containing a malformed RDATA section, causing named to crash with an assertion failure in rdata.c during log message construction. Monitor for named assertion failure crashes (named daemon exit) as a potential exploitation indicator.
  • Both recursive and authoritative-only nameservers are affected. Any named instance reachable by untrusted query sources is a valid target; scope detection to all named listener ports (typically UDP/TCP 53).
  • The flaw was introduced with RFC 5011 support in BIND 9.7; versions prior to 9.7 are not affected. Fingerprint BIND version strings to identify vulnerable instances (9.7.x, 9.8.x before 9.8.5-P2, 9.9.x before 9.9.3-P2).
  • The vulnerable code path is in rdata.c within the RFC 5011 implementation. Source-code-level or binary-level detection should focus on the rdata parsing and log-message construction routines in that file.
  • ·No workaround is available for vulnerable BIND versions; the only mitigation is patching to a fixed release (9.8.5-P2, 9.9.3-P2, or later).
  • ·BIND as shipped with Red Hat Enterprise Linux 5 (base bind package) is NOT affected; only bind97 on RHEL 5 and bind on RHEL 6 are affected. Ensure detection/patching scope is correctly targeted.

CVSS provenance

nvdv2.07.8HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
osv7.8HIGH
vulncheck7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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