CVE-2019-3883

NameCVE-2019-3883
DescriptionIn 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be waited by the worker for at most 'ioblocktimeout' seconds. However this timeout applies only for un-encrypted requests. Connections using SSL/TLS are not taking this timeout into account during reads, and may hang longer.An unauthenticated attacker could repeatedly create hanging LDAP requests to hang all the workers, resulting in a Denial of Service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1779-1
NVD severitymedium
Debian Bugs927939

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
389-ds-base (PTS)jessie1.3.3.5-4vulnerable
jessie (security)1.3.3.5-4+deb8u7fixed
stretch1.3.5.17-2vulnerable
buster1.4.0.21-1vulnerable
bullseye, sid1.4.2.4-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
389-ds-basesource(unstable)1.4.1.5-1927939
389-ds-basesourcejessie1.3.3.5-4+deb8u6DLA-1779-1

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=1693612
https://pagure.io/389-ds-base/issue/50329
https://pagure.io/389-ds-base/c/4d9cc24da (master)
https://pagure.io/389-ds-base/c/fcf2b5ddb (389-ds-base-1.4.0)
https://pagure.io/389-ds-base/c/dd4b69b55 (389-ds-base-1.3.9)
Patch was applied upstream but then reverted again, as it introduces
regressions:
https://pagure.io/389-ds-base/c/f35ad37100ab5915445d6d37f8921dd46f83656e
Fixed properly via:
https://pagure.io/389-ds-base/pull-request/50398
https://pagure.io/389-ds-base/c/f20e982c68a700b5ba2c41e5b6f3cdeb5fcb5fab (389-ds-base-1.4.1.4)
https://pagure.io/389-ds-base/c/7b0e7f6f51f6a117f6a40aa3967cad656eafb811 (389-ds-base-1.4.0.24)
https://pagure.io/389-ds-base/c/33ac4f5a78d1a42385d1c011d88cef26771e99f5 (389-ds-base-1.3.9 branch)

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