Critical severity9.8NVD Advisory· Published May 12, 2017· Updated Jun 17, 2026
CVE-2017-8923
CVE-2017-8923
Description
The zend_string_extend function in Zend/zend_string.h in PHP through 7.1.5 does not prevent changes to string objects that result in a negative length, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact by leveraging a script's use of .= with a long string.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
30- osv-coords28 versionspkg:rpm/opensuse/php7&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/php7&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/php7-test&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/php72&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2012pkg:rpm/suse/php72&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/php74&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2012pkg:rpm/suse/php74&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/php7&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/php7&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOSpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP3pkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2015%20SP3pkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCLpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/php7&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/php7&distro=SUSE%20Manager%20Proxy%204.1pkg:rpm/suse/php7&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1pkg:rpm/suse/php7&distro=SUSE%20Manager%20Server%204.1
< 7.4.33-150200.3.46.2+ 27 more
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.2.5-1.75.1
- (no CPE)range: < 7.2.5-1.75.1
- (no CPE)range: < 7.4.6-1.33.1
- (no CPE)range: < 7.4.6-1.33.1
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.2.34-150000.4.103.1
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.4.33-150200.3.46.2
- (no CPE)range: < 7.4.33-150200.3.46.2
Patches
Vulnerability mechanics
References
3- bugs.php.net/bug.phpnvdExploitIssue TrackingVendor Advisory
- www.securityfocus.com/bid/98518nvdThird Party AdvisoryVDB Entry
- security.netapp.com/advisory/ntap-20241227-0007/nvd
News mentions
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