CVE-2018-19591: Input Validation
First published: Tue Dec 04 2018(Updated: )
In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU glibc | <=2.28 | |
| Fedoraproject Fedora | =28 | |
| Fedoraproject Fedora | =29 | |
| debian/glibc | 2.31-13+deb11u11 2.31-13+deb11u10 2.36-9+deb12u9 2.36-9+deb12u7 2.40-4 |
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Reference Links
- http://www.securityfocus.com/bid/106037
- http://www.securitytracker.com/id/1042174
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BO7WHN52GFMC5F2I2232GFIPSSXWFV7G/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M52KE4YR3GNMHQUOS3DKAGZD5TQ5D5UH/
- https://security.gentoo.org/glsa/201903-09
- https://security.gentoo.org/glsa/201908-06
- https://security.netapp.com/advisory/ntap-20190321-0003/
- https://sourceware.org/bugzilla/show_bug.cgi?id=23927
- https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=NEWS;hb=HEAD
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=d527c860f5a3f0ed687bd03f0cb464612dc23408
- https://usn.ubuntu.com/4416-1/
- https://launchpad.net/bugs/cve/CVE-2018-19591
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BO7WHN52GFMC5F2I2232GFIPSSXWFV7G/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M52KE4YR3GNMHQUOS3DKAGZD5TQ5D5UH/
- https://sourceware.org/git/?p=glibc.git%3Ba=blob_plain%3Bf=NEWS%3Bhb=HEAD
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=d527c860f5a3f0ed687bd03f0cb464612dc23408
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d527c860f5a3f0ed687bd03f0cb464612dc23408
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2180fee114b778515b3f560e5ff1e795282e60b0
- https://security-tracker.debian.org/tracker/CVE-2018-19591
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19591
- https://nvd.nist.gov/vuln/detail/CVE-2018-19591
- https://ubuntu.com/security/CVE-2018-19591
Frequently Asked Questions
What is CVE-2018-19591?
CVE-2018-19591 is a vulnerability in the GNU C Library (glibc) through version 2.28.
How does CVE-2018-19591 work?
CVE-2018-19591 occurs when a crafted hostname is resolved using the getaddrinfo() function, leading to the allocation of a socket descriptor that is not closed.
What is the severity of CVE-2018-19591?
CVE-2018-19591 has a severity rating of 7.5 (high).
Which software is affected by CVE-2018-19591?
GNU glibc versions up to 2.28, Fedoraproject Fedora versions 28 and 29 are affected by CVE-2018-19591.
How can CVE-2018-19591 be fixed?
There are security updates available for GNU glibc and Fedoraproject Fedora to address CVE-2018-19591. Apply the latest patches provided by the respective vendors.
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