Limiting simultaneous TCP clients was ineffective
Description
By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
329.9.0-9.10.8-P1, 9.11.0-9.11.6, 9.12.0-9.12.4, 9.13.0-9.13.7, 9.14.0+ 1 more
- (no CPE)range: 9.9.0-9.10.8-P1, 9.11.0-9.11.6, 9.12.0-9.12.4, 9.13.0-9.13.7, 9.14.0
- (no CPE)range: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.
- osv-coords30 versionspkg:apk/chainguard/bindpkg:apk/chainguard/bind-devpkg:apk/chainguard/bind-dnssec-rootpkg:apk/chainguard/bind-dnssec-toolspkg:apk/chainguard/bind-docpkg:apk/chainguard/bind-libspkg:apk/chainguard/bind-pluginspkg:apk/chainguard/bind-toolspkg:apk/wolfi/bindpkg:apk/wolfi/bind-devpkg:apk/wolfi/bind-dnssec-rootpkg:apk/wolfi/bind-dnssec-toolspkg:apk/wolfi/bind-docpkg:apk/wolfi/bind-libspkg:apk/wolfi/bind-pluginspkg:apk/wolfi/bind-toolspkg:rpm/opensuse/bind&distro=openSUSE%20Leap%2015.0pkg:rpm/opensuse/bind&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/bind&distro=openSUSE%20Tumbleweedpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4
< 0+ 29 more
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 9.11.2-lp151.11.3.1
- (no CPE)range: < 9.11.2-lp151.11.3.1
- (no CPE)range: < 9.16.20-1.4
- (no CPE)range: < 9.11.2-3.10.1
- (no CPE)range: < 9.11.2-12.11.2
- (no CPE)range: < 9.11.2-12.11.2
- (no CPE)range: < 9.11.2-12.11.2
- (no CPE)range: < 9.11.2-12.11.2
- (no CPE)range: < 9.9.6P1-0.51.15.4
- (no CPE)range: < 9.9.6P1-0.51.15.4
- (no CPE)range: < 9.11.2-3.10.1
- (no CPE)range: < 9.9.9P1-28.42.1
- (no CPE)range: < 9.11.2-3.10.1
- (no CPE)range: < 9.11.2-3.10.1
Patches
Vulnerability mechanics
References
3- kb.isc.org/docs/cve-2018-5743mitrex_refsource_CONFIRM
- support.f5.com/csp/article/K74009656mitrex_refsource_CONFIRM
- www.synology.com/security/advisory/Synology_SA_19_20mitrex_refsource_CONFIRM
News mentions
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