Vulnerability from csaf_opensuse
Published
2021-08-19 15:21
Modified
2021-08-19 15:21
Summary
Security update for c-ares
Notes
Title of the patch
Security update for c-ares
Description of the patch
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 ares_getaddrinfo() was terminated by an ares_destroy(), 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
This update was imported from the SUSE:SLE-15:Update update project.
Patchnames
openSUSE-2021-1168
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
{ document: { aggregate_severity: { namespace: "https://www.suse.com/support/security/rating/", text: "important", }, category: "csaf_security_advisory", csaf_version: "2.0", distribution: { text: "Copyright 2024 SUSE LLC. All rights reserved.", tlp: { label: "WHITE", url: "https://www.first.org/tlp/", }, }, lang: "en", notes: [ { category: "summary", text: "Security update for c-ares", title: "Title of the patch", }, { category: "description", text: "This update for c-ares fixes the following issues:\n\nVersion update to git snapshot 1.17.1+20200724:\n\n- CVE-2021-3672: fixed missing input validation on hostnames returned by DNS servers (bsc#1188881)\n- If ares_getaddrinfo() was terminated by an ares_destroy(), it would cause crash\n- Crash in sortaddrinfo() if the list size equals 0 due to an unexpected DNS response\n- Expand number of escaped characters in DNS replies as per RFC1035 5.1 to prevent spoofing\n- Use unbuffered /dev/urandom for random data to prevent early startup performance issues\n\nThis update was imported from the SUSE:SLE-15:Update update project.", title: "Description of the patch", }, { category: "details", text: "openSUSE-2021-1168", title: "Patchnames", }, { category: "legal_disclaimer", text: "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).", title: "Terms of use", }, ], publisher: { category: "vendor", contact_details: "https://www.suse.com/support/security/contact/", name: "SUSE Product Security Team", namespace: "https://www.suse.com/", }, references: [ { category: "external", summary: "SUSE ratings", url: "https://www.suse.com/support/security/rating/", }, { category: "self", summary: "URL of this CSAF notice", url: "https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2021_1168-1.json", }, { category: "self", summary: "URL for openSUSE-SU-2021:1168-1", url: "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/DGOSTA5JEGSS4FAXRRSGJYRZUQK3LXPV/", }, { category: "self", summary: "E-Mail link for openSUSE-SU-2021:1168-1", url: "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/DGOSTA5JEGSS4FAXRRSGJYRZUQK3LXPV/", }, { category: "self", summary: "SUSE Bug 1188881", url: "https://bugzilla.suse.com/1188881", }, { category: "self", summary: "SUSE CVE CVE-2021-3672 page", url: "https://www.suse.com/security/cve/CVE-2021-3672/", }, ], title: "Security update for c-ares", tracking: { current_release_date: "2021-08-19T15:21:43Z", generator: { date: "2021-08-19T15:21:43Z", engine: { name: "cve-database.git:bin/generate-csaf.pl", version: "1", }, }, id: "openSUSE-SU-2021:1168-1", initial_release_date: "2021-08-19T15:21:43Z", revision_history: [ { date: "2021-08-19T15:21:43Z", number: "1", summary: "Current version", }, ], status: "final", version: "1", }, }, product_tree: { branches: [ { branches: [ { branches: [ { category: "product_version", name: "c-ares-devel-1.17.1+20200724-lp152.2.9.1.i586", product: { name: "c-ares-devel-1.17.1+20200724-lp152.2.9.1.i586", product_id: "c-ares-devel-1.17.1+20200724-lp152.2.9.1.i586", }, }, { category: "product_version", name: 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The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.", title: "CVE description", }, ], product_status: { recommended: [ "openSUSE Leap 15.2:c-ares-devel-1.17.1+20200724-lp152.2.9.1.i586", "openSUSE Leap 15.2:c-ares-devel-1.17.1+20200724-lp152.2.9.1.x86_64", "openSUSE Leap 15.2:c-ares-utils-1.17.1+20200724-lp152.2.9.1.i586", "openSUSE Leap 15.2:c-ares-utils-1.17.1+20200724-lp152.2.9.1.x86_64", "openSUSE Leap 15.2:libcares2-1.17.1+20200724-lp152.2.9.1.i586", "openSUSE Leap 15.2:libcares2-1.17.1+20200724-lp152.2.9.1.x86_64", "openSUSE Leap 15.2:libcares2-32bit-1.17.1+20200724-lp152.2.9.1.x86_64", ], }, references: [ { category: "external", summary: "CVE-2021-3672", url: "https://www.suse.com/security/cve/CVE-2021-3672", }, { category: "external", summary: "SUSE Bug 1188881 for CVE-2021-3672", url: "https://bugzilla.suse.com/1188881", }, { category: "external", summary: "SUSE Bug 1193099 for CVE-2021-3672", url: "https://bugzilla.suse.com/1193099", }, ], remediations: [ { category: "vendor_fix", details: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n", product_ids: [ "openSUSE Leap 15.2:c-ares-devel-1.17.1+20200724-lp152.2.9.1.i586", "openSUSE Leap 15.2:c-ares-devel-1.17.1+20200724-lp152.2.9.1.x86_64", "openSUSE Leap 15.2:c-ares-utils-1.17.1+20200724-lp152.2.9.1.i586", "openSUSE Leap 15.2:c-ares-utils-1.17.1+20200724-lp152.2.9.1.x86_64", "openSUSE Leap 15.2:libcares2-1.17.1+20200724-lp152.2.9.1.i586", "openSUSE Leap 15.2:libcares2-1.17.1+20200724-lp152.2.9.1.x86_64", "openSUSE Leap 15.2:libcares2-32bit-1.17.1+20200724-lp152.2.9.1.x86_64", ], }, ], scores: [ { cvss_v3: { baseScore: 8.1, baseSeverity: "HIGH", vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", version: "3.1", }, products: [ "openSUSE Leap 15.2:c-ares-devel-1.17.1+20200724-lp152.2.9.1.i586", "openSUSE Leap 15.2:c-ares-devel-1.17.1+20200724-lp152.2.9.1.x86_64", "openSUSE Leap 15.2:c-ares-utils-1.17.1+20200724-lp152.2.9.1.i586", "openSUSE Leap 15.2:c-ares-utils-1.17.1+20200724-lp152.2.9.1.x86_64", "openSUSE Leap 15.2:libcares2-1.17.1+20200724-lp152.2.9.1.i586", "openSUSE Leap 15.2:libcares2-1.17.1+20200724-lp152.2.9.1.x86_64", "openSUSE Leap 15.2:libcares2-32bit-1.17.1+20200724-lp152.2.9.1.x86_64", ], }, ], threats: [ { category: "impact", date: "2021-08-19T15:21:43Z", details: "important", }, ], title: "CVE-2021-3672", }, ], }
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Nomenclature
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