RHSA-2007:0967
Vulnerability from csaf_redhat - Published: 2007-11-05 16:07 - Updated: 2026-06-25 10:34Summary
Red Hat Security Advisory: pcre security update
Severity
Critical
Notes
Topic: Updated pcre packages that correct two security flaws are now available for
Red Hat Enterprise Linux 5.
This update has been rated as having critical security impact by the Red
Hat Security Response Team.
Details: PCRE is a Perl-compatible regular expression library.
Multiple flaws were found in the way pcre handles certain malformed regular
expressions. If an application linked against pcre, such as Konqueror,
parses a malicious regular expression, it may be possible to run arbitrary
code as the user running the application. (CVE-2007-1659, CVE-2007-1660)
Users of pcre are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.
Red Hat would like to thank Tavis Ormandy and Will Drewry for properly
disclosing these issues.
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.
Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via regex patterns containing unmatched "\Q\E" sequences with orphan "\E" codes.
Affected products
Fixed
32 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 5Client-Workstation:pcre-0:6.6-2.el5_0.1.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Client-Workstation:pcre-debuginfo-0:6.6-2.el5_0.1.i386 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Client-Workstation:pcre-debuginfo-0:6.6-2.el5_0.1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Client-Workstation:pcre-devel-0:6.6-2.el5_0.1.i386 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Client-Workstation:pcre-devel-0:6.6-2.el5_0.1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Client:pcre-0:6.6-2.el5_0.1.i386 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Client:pcre-0:6.6-2.el5_0.1.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Client:pcre-0:6.6-2.el5_0.1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Client:pcre-debuginfo-0:6.6-2.el5_0.1.i386 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Client:pcre-debuginfo-0:6.6-2.el5_0.1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-0:6.6-2.el5_0.1.i386 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-0:6.6-2.el5_0.1.ia64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-0:6.6-2.el5_0.1.ppc | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-0:6.6-2.el5_0.1.ppc64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-0:6.6-2.el5_0.1.s390 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-0:6.6-2.el5_0.1.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-0:6.6-2.el5_0.1.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-0:6.6-2.el5_0.1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-debuginfo-0:6.6-2.el5_0.1.i386 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-debuginfo-0:6.6-2.el5_0.1.ia64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-debuginfo-0:6.6-2.el5_0.1.ppc | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-debuginfo-0:6.6-2.el5_0.1.ppc64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-debuginfo-0:6.6-2.el5_0.1.s390 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-debuginfo-0:6.6-2.el5_0.1.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-debuginfo-0:6.6-2.el5_0.1.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-devel-0:6.6-2.el5_0.1.i386 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-devel-0:6.6-2.el5_0.1.ia64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-devel-0:6.6-2.el5_0.1.ppc | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-devel-0:6.6-2.el5_0.1.ppc64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-devel-0:6.6-2.el5_0.1.s390 | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-devel-0:6.6-2.el5_0.1.s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server:pcre-devel-0:6.6-2.el5_0.1.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Critical
Perl-Compatible Regular Expression (PCRE) library before 7.0 does not properly calculate sizes for unspecified "multiple forms of character class", which triggers a buffer overflow that allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code.
Affected products
Fixed
32 products, the same list as for
CVE-2007-1659
Threats
Impact
Important
References
13 references
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"5Server:pcre-debuginfo-0:6.6-2.el5_0.1.ppc",
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"5Server:pcre-debuginfo-0:6.6-2.el5_0.1.s390",
"5Server:pcre-debuginfo-0:6.6-2.el5_0.1.s390x",
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"5Server:pcre-devel-0:6.6-2.el5_0.1.x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2007-1660"
},
{
"category": "external",
"summary": "RHBZ#315881",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=315881"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2007-1660",
"url": "https://www.cve.org/CVERecord?id=CVE-2007-1660"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2007-1660",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2007-1660"
}
],
"release_date": "2007-11-05T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2007-11-05T16:07:00+00:00",
"details": "Before applying this update, make sure that all previously-released\nerrata relevant to your system have been applied. \n\nThis update is available via Red Hat Network. Details on how to use \nthe Red Hat Network to apply this update are available at\nhttp://kbase.redhat.com/faq/FAQ_58_10188",
"product_ids": [
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"5Client-Workstation:pcre-debuginfo-0:6.6-2.el5_0.1.x86_64",
"5Client-Workstation:pcre-devel-0:6.6-2.el5_0.1.i386",
"5Client-Workstation:pcre-devel-0:6.6-2.el5_0.1.x86_64",
"5Client:pcre-0:6.6-2.el5_0.1.i386",
"5Client:pcre-0:6.6-2.el5_0.1.src",
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],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2007:0967"
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "pcre regular expression flaws"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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