Bug 2460147 (CVE-2017-20230)

Summary: CVE-2017-20230 perl-Storable: Storable for Perl: Denial of service via stack overflow in retrieve_hook function
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bbrownin, fdeutsch, oramraz, smullick, stirabos, thason
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Storable for Perl. A remote attacker can exploit a vulnerability in the `retrieve_hook` function by crafting malicious data. This flaw occurs because the function incorrectly handles the length of class names, storing it as a signed integer but processing it as unsigned during read operations. Successful exploitation leads to a stack overflow, which can cause a denial of service.
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Description OSIDB Bzimport 2026-04-21 16:01:22 UTC 
Storable versions before 3.05 for Perl has a stack overflow.

The retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow.