rhsa-2024_5894
Vulnerability from csaf_redhat
Published
2024-08-27 11:28
Modified
2024-11-06 06:48
Summary
Red Hat Security Advisory: bind security update
Notes
Topic
An update for bind is now available for Red Hat Enterprise Linux 7.7 Advanced Update Support.
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 Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.
Security Fix(es):
* bind: bind9: BIND's database will be slow if a very large number of RRs exist at the same nam (CVE-2024-1737)
* bind9: bind: SIG(0) can be used to exhaust CPU resources (CVE-2024-1975)
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.
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"text": "The identified flaw in the bind9 package represents a significant severity issue due to its potential to disrupt DNS resolution services. Specifically, a hostname with an extensive number of resource records can substantially degrade the performance of bind\u0027s resolver cache and authoritative zone databases. This degradation occurs during the addition or updating of these records, and is further exacerbated by client queries, which can lead to resource exhaustion. Consequently, the system may experience increased latency or complete unavailability of DNS services, resulting in a Denial of Service (DoS).",
"title": "Statement"
},
{
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"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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"attackVector": "NETWORK",
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"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"title": "bind: bind9: BIND\u0027s database will be slow if a very large number of RRs exist at the same nam"
},
{
"cve": "CVE-2024-1975",
"cwe": {
"id": "CWE-400",
"name": "Uncontrolled Resource Consumption"
},
"discovery_date": "2024-07-19T18:35:50+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2298901"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the bind9 package, where if a DNS server hosts a zone containing a \"KEY\" resource record or a DNS resolver utilizes the DNSSEC validate feature to validate a \"KEY\" resource record, a malicious client could exhaust the CPU resourced from the resolver by sending a stream of SIG(0) signed requests. This issue can lead to a denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "bind9: bind: SIG(0) can be used to exhaust CPU resources",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability in the BIND9 package is classified as an important severity issue due to its potential to significantly disrupt DNS services, which are critical for internet functionality. The flaw allows a malicious client to exploit the DNSSEC validation process by sending a stream of SIG(0) signed requests, leading to CPU exhaustion on the resolver. This can cause a denial-of-service (DoS), rendering the DNS server unable to respond to legitimate queries. Given the widespread use of BIND9 in both enterprise and public DNS infrastructure, the impact of such an attack can be extensive, affecting numerous users and services reliant on DNS resolution.",
"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-2024-1975"
},
{
"category": "external",
"summary": "RHBZ#2298901",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2298901"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2024-1975",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-1975"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-1975",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1975"
}
],
"release_date": "2024-07-23T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2024-08-27T11:28:10+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/11258",
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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2024:5894"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "bind9: bind: SIG(0) can be used to exhaust CPU resources"
}
]
}
Loading...
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.