THREATPORT/VULNERABILITY/CVE-2015-2331
HIGH SEVERITY

CVE-2015-2331

Libzip vulnerability

CVSS
7.5
EPSS
27.7%
EPSS pct
98th
Exploited
No known
Integer overflow in the _zip_cdir_new function in zip_dirent.c in libzip 0.11.2 and earlier, as used in the ZIP extension in PHP before 5.4.39, 5.5.x before 5.5.23, and 5.6.x before 5.6.7 and other products, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a ZIP archive that contains many entries, leading to a heap-based buffer overflow.
Affected vendor
Nih
Affected product
Libzip
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness type (CWE)
Published
2015-03-30

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 27.7% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2015-2331

  • Confirm whether Nih Libzip is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2015-2331.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-2331

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-2331 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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