rhsa-2018_1932
Vulnerability from csaf_redhat
Published
2018-06-19 05:19
Modified
2024-11-22 11:55
Summary
Red Hat Security Advisory: zsh security update
Notes
Topic
An update for zsh is now available for Red Hat Enterprise Linux 6.
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 zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more.
Security Fix(es):
* zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c (CVE-2018-1083)
* zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072)
* zsh: buffer overrun in symlinks (CVE-2017-18206)
* zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
The CVE-2018-1083 and CVE-2018-1100 issues were discovered by Richard Maciel Costa (Red Hat).
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.10 Release Notes and Red Hat Enterprise Linux 6.10 Technical 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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"text": "1549836"
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"text": "A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do symbolic link resolution in the aforementioned path. An attacker could exploit this vulnerability to cause a denial of service condition on the target.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "zsh: buffer overflow when scanning very long directory paths for symbolic links",
"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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{
"category": "self",
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},
{
"category": "external",
"summary": "RHBZ#1549836",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1549836"
},
{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2014-10072"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2014-10072",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2014-10072"
}
],
"release_date": "2014-01-20T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2018-06-19T05:19:02+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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},
{
"cve": "CVE-2017-18206",
"cwe": {
"id": "CWE-121",
"name": "Stack-based Buffer Overflow"
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"ids": [
{
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"text": "1549861"
}
],
"notes": [
{
"category": "description",
"text": "A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do a symbolic link resolution in the aforementioned path. If the user affected is privileged, this leads to privilege escalation.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "zsh: buffer overrun in symlinks",
"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-2017-18206"
},
{
"category": "external",
"summary": "RHBZ#1549861",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1549861"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2017-18206",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-18206"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-18206",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-18206"
}
],
"release_date": "2017-05-09T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2018-06-19T05:19:02+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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"baseScore": 7.5,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
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"scope": "CHANGED",
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{
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"details": "Low"
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"title": "zsh: buffer overrun in symlinks"
},
{
"acknowledgments": [
{
"names": [
"Richard Maciel Costa"
],
"organization": "Red Hat",
"summary": "This issue was discovered by Red Hat."
}
],
"cve": "CVE-2018-1083",
"cwe": {
"id": "CWE-121",
"name": "Stack-based Buffer Overflow"
},
"discovery_date": "2018-03-16T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1557382"
}
],
"notes": [
{
"category": "description",
"text": "A buffer overflow flaw was found in the zsh shell auto-complete functionality. A local, unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use auto-complete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "zsh: Stack-based buffer overflow in gen_matches_files() at compctl.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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},
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{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2018-1083"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-1083",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1083"
}
],
"release_date": "2018-03-26T00:00:00+00:00",
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"date": "2018-06-19T05:19:02+00:00",
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{
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
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"confidentialityImpact": "HIGH",
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"title": "zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c"
},
{
"acknowledgments": [
{
"names": [
"Richard Maciel Costa"
],
"organization": "Red Hat",
"summary": "This issue was discovered by Red Hat."
}
],
"cve": "CVE-2018-1100",
"cwe": {
"id": "CWE-121",
"name": "Stack-based Buffer Overflow"
},
"discovery_date": "2018-04-03T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1563395"
}
],
"notes": [
{
"category": "description",
"text": "A buffer overflow flaw was found in the zsh shell check path functionality. A local, unprivileged user can create a specially crafted message file, which, if used to set a custom \"you have new mail\" message, leads to code execution in the context of the user who receives the message. If the user affected is privileged, this leads to privilege escalation.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution",
"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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},
{
"category": "external",
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1563395"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2018-1100",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-1100"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-1100",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1100"
}
],
"release_date": "2018-04-07T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2018-06-19T05:19:02+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-2018:1932"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"version": "3.0"
},
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],
"threats": [
{
"category": "impact",
"details": "Low"
}
],
"title": "zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution"
}
]
}
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.