rhsa-2020_4479
Vulnerability from csaf_redhat
Published
2020-11-04 02:12
Modified
2024-11-22 14:57
Summary
Red Hat Security Advisory: libxml2 security update
Notes
Topic
An update for libxml2 is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Moderate. 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 libxml2 library is a development toolbox providing the implementation of various XML standards.
Security Fix(es):
* libxml2: memory leak in xmlParseBalancedChunkMemoryRecover in parser.c (CVE-2019-19956)
* libxml2: memory leak in xmlSchemaPreRun in xmlschemas.c (CVE-2019-20388)
* libxml2: infinite loop in xmlStringLenDecodeEntities in some end-of-file situations (CVE-2020-7595)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes linked from 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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{
"category": "impact",
"details": "Moderate"
}
],
"title": "libxml2: memory leak in xmlParseBalancedChunkMemoryRecover in parser.c"
},
{
"cve": "CVE-2019-20388",
"cwe": {
"id": "CWE-401",
"name": "Missing Release of Memory after Effective Lifetime"
},
"discovery_date": "2020-02-06T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1799734"
}
],
"notes": [
{
"category": "description",
"text": "A memory leak was found in the xmlSchemaValidateStream function of libxml2. Applications that use this library may be vulnerable to memory not being freed leading to a denial of service. System availability is the highest threat from this vulnerability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libxml2: memory leak in xmlSchemaPreRun in xmlschemas.c",
"title": "Vulnerability summary"
},
{
"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-2019-20388"
},
{
"category": "external",
"summary": "RHBZ#1799734",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1799734"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2019-20388",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-20388"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-20388",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20388"
}
],
"release_date": "2020-01-21T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2020-11-04T02:12:23+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\n\nThe desktop must be restarted (log out, then log back in) for this update to take effect.",
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"url": "https://access.redhat.com/errata/RHSA-2020:4479"
}
],
"scores": [
{
"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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{
"category": "impact",
"details": "Moderate"
}
],
"title": "libxml2: memory leak in xmlSchemaPreRun in xmlschemas.c"
},
{
"cve": "CVE-2020-7595",
"cwe": {
"id": "CWE-835",
"name": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)"
},
"discovery_date": "2020-02-06T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1799786"
}
],
"notes": [
{
"category": "description",
"text": "xmlStringLenDecodeEntities in parser.c in libxml2 2.9.10 has an infinite loop in a certain end-of-file situation.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libxml2: infinite loop in xmlStringLenDecodeEntities in some end-of-file situations",
"title": "Vulnerability summary"
},
{
"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-2020-7595"
},
{
"category": "external",
"summary": "RHBZ#1799786",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1799786"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2020-7595",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-7595"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-7595",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7595"
}
],
"release_date": "2020-01-21T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2020-11-04T02:12:23+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\n\nThe desktop must be restarted (log out, then log back in) for this update to take effect.",
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"url": "https://access.redhat.com/errata/RHSA-2020:4479"
}
],
"scores": [
{
"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": "Moderate"
}
],
"title": "libxml2: infinite loop in xmlStringLenDecodeEntities in some end-of-file situations"
}
]
}
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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.