RHSA-2021_0028
Vulnerability from csaf_redhat - Published: 2021-01-06 11:25 - Updated: 2024-11-14 17:22Summary
Red Hat Security Advisory: Red Hat Virtualization security, bug fix, and enhancement update
Severity
Important
Notes
Topic: An update for openvswitch2.11, ovn2.11, redhat-release-virtualization-host, and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 and Red Hat Virtualization Engine 4.3.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.
The ovirt-node-ng packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.
The following packages have been upgraded to a later upstream version: openvswitch2.11 (2.11.3), ovn2.11 (2.11.1), redhat-release-virtualization-host (4.3.12), redhat-virtualization-host (4.3.12). (BZ#1898513, BZ#1907537, BZ#1907538)
Security Fix(es):
* lldpd: buffer overflow in the lldp_decode function in daemon/protocols/lldp.c (CVE-2015-8011)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A buffer overflow was found in the lldp_decode function in daemon/protocols/lldp.c in lldpd. This flaw allows remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via vectors involving large management addresses and TLV boundaries. This threatens the system's confidentiality, integrity, and availability.
9.8 (Critical)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/2974891
https://access.redhat.com/errata/RHSA-2021:0028
Workaround
When the lldpd source is compiled with source fortification enabled, the flaw becomes unexploitable and will just cause a crash.
References
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"name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1896536"
}
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{
"category": "description",
"text": "A buffer overflow was found in the lldp_decode function in daemon/protocols/lldp.c in lldpd. This flaw allows remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via vectors involving large management addresses and TLV boundaries. This threatens the system\u0027s confidentiality, integrity, and availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "lldpd: buffer overflow in the lldp_decode function in daemon/protocols/lldp.c",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The lldpd package as shipped with Red Hat Enterprise Linux 8 is not affected by this flaw because it has already received the patch. The flaw affects versions before 0.8.0 and the shipped version is 1.0.1+. In addition, Red Hat Virtualization 4.3 manager appliance is out of support scope and therefore no fix for it will be delivered.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2015-8011"
},
{
"category": "external",
"summary": "RHBZ#1896536",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1896536"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2015-8011",
"url": "https://www.cve.org/CVERecord?id=CVE-2015-8011"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2015-8011",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-8011"
},
{
"category": "external",
"summary": "http://www.openwall.com/lists/oss-security/2015/10/16/2",
"url": "http://www.openwall.com/lists/oss-security/2015/10/16/2"
},
{
"category": "external",
"summary": "http://www.openwall.com/lists/oss-security/2015/10/30/2",
"url": "http://www.openwall.com/lists/oss-security/2015/10/30/2"
}
],
"release_date": "2015-10-15T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-01-06T11:25:17+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/2974891",
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"restart_required": {
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"url": "https://access.redhat.com/errata/RHSA-2021:0028"
},
{
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "lldpd: buffer overflow in the lldp_decode function in daemon/protocols/lldp.c"
}
]
}
Loading…
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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