openSUSE-SU-2021:2760-1

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Import Source
https://ftp.suse.com/pub/projects/security/osv/openSUSE-SU-2021:2760-1.json
JSON Data
https://api.osv.dev/v1/vulns/openSUSE-SU-2021:2760-1
Related
Published
2021-08-17T15:11:37Z
Modified
2021-08-17T15:11:37Z
Summary
Security update for c-ares
Details

This update for c-ares fixes the following issues:

Version update to git snapshot 1.17.1+20200724:

  • CVE-2021-3672: fixed missing input validation on hostnames returned by DNS servers (bsc#1188881)
  • If aresgetaddrinfo() was terminated by an aresdestroy(), it would cause crash
  • Crash in sortaddrinfo() if the list size equals 0 due to an unexpected DNS response
  • Expand number of escaped characters in DNS replies as per RFC1035 5.1 to prevent spoofing
  • Use unbuffered /dev/urandom for random data to prevent early startup performance issues
References

Affected packages

openSUSE:Leap 15.3 / c-ares

Package

Name
c-ares
Purl
purl:rpm/suse/c-ares&distro=openSUSE%20Leap%2015.3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.17.1+20200724-3.14.1

Ecosystem specific 

{
    "binaries": [
        {
            "c-ares-devel": "1.17.1+20200724-3.14.1",
            "libcares2": "1.17.1+20200724-3.14.1",
            "libcares2-32bit": "1.17.1+20200724-3.14.1",
            "c-ares-utils": "1.17.1+20200724-3.14.1"
        }
    ]
}