CVE-2017-7246: Input Validation
First published: Thu Mar 23 2017(Updated: )
A stack-based buffer overflow flaw was found in PCRE. An attacker could use a crafted file that, when processed by PCRE, would crash the application using the PCRE library. This issue only affects the PCRE version 8.40.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PCRE | =8.40 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2017-7246 https://nvd.nist.gov/vuln/detail/CVE-2017-7246 https://blogs.gentoo.org/ago/2017/03/20/libpcre-two-stack-based-buffer-overflow-write-in-pcre32_copy_substring-pcre_get-c/
- https://bugzilla.redhat.com/show_bug.cgi?id=1437369
- https://access.redhat.com/errata/RHSA-2018:2486
- https://access.redhat.com/security/cve/CVE-2017-7246
- http://www.securityfocus.com/bid/97067
- https://blogs.gentoo.org/ago/2017/03/20/libpcre-two-stack-based-buffer-overflow-write-in-pcre32_copy_substring-pcre_get-c/
- https://security.gentoo.org/glsa/201710-25
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1437370
- https://bugs.exim.org/show_bug.cgi?id=2057
- https://access.redhat.com/security/cve/CVE-2017-7244
- https://access.redhat.com/security/cve/CVE-2017-7245
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1437484
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1437486
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1437487
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1437483
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1437485
Frequently Asked Questions
What is the severity of CVE-2017-7246?
CVE-2017-7246 is classified as a medium severity vulnerability due to the potential for a stack-based buffer overflow.
How do I fix CVE-2017-7246?
To fix CVE-2017-7246, upgrade to a newer version of the PCRE library that is not affected by this vulnerability.
What causes the CVE-2017-7246 vulnerability?
CVE-2017-7246 is caused by a stack-based buffer overflow in the pcre32_copy_substring function when processing crafted files.
Which version of PCRE is affected by CVE-2017-7246?
Only PCRE version 8.40 is affected by CVE-2017-7246.
What are the potential impacts of CVE-2017-7246?
The potential impacts of CVE-2017-7246 include application crashes and possible arbitrary code execution if exploited.
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