CVE-2019-14873

NameCVE-2019-14873
DescriptionIn the __multadd function of the newlib libc library, prior to versions 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate a big integer, however no check is performed to verify if the allocation succeeded or not. This will trigger a null pointer dereference bug in case of a memory allocation failure.
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)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
newlib (PTS)jessie2.1.0+git20140818.1a8323b-2vulnerable
stretch2.4.0.20160527-2vulnerable
buster3.1.0.20181231-1vulnerable
bullseye, sid3.3.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
newlibsource(unstable)3.3.0-1

Notes

[buster] - newlib <no-dsa> (Minor issue)
[stretch] - newlib <no-dsa> (Minor issue)
[jessie] - newlib <ignored> (Minor issue)
https://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib/
picolibc might be affected, not yet in the archive

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