CVE-2013-2174

Curl vulnerability

CVSS

6.8

EPSS

11.1%

EPSS pct

95th

Exploited

No known

Heap-based buffer overflow in the curl_easy_unescape function in lib/escape.c in cURL and libcurl 7.7 through 7.30.0 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted string ending in a "%" (percent) character.

Affected vendor

Haxx

Affected product

Curl

CVSS vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Weakness type (CWE)

CWE-119 — Improper Restriction of Operations within Memory Bounds

Published

2013-07-31

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium 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 11.1% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2013-2174

Confirm whether Haxx Curl is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2013-2174.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2013-2174

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2013-2174 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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