CVE-2013-2174

Home/CVE/Heap-based buffer overflow in the curl_easy_unescape function in lib/escape.c in cURL and libcurl 7.7 through 7.30.0 all

CVE

Heap-based buffer overflow in the curl_easy_unescape function in lib/escape.c in cURL and libcurl 7.7 through 7.30.0 all

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.

MEDIUM · CVSS 6.8 EPSS 0.03181

Schedule remediation

Public exploit or PoC is available

Sigma rules7 YARA rules0

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Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

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Affected Products & Versions

haxx curlall versions

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Public Exploits & PoCs

pocgithub.com · 192c4f788d48f82c03e9cef40013f34370e90737github.com

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Sigma Hunt Rules

Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.

producthighSuspicious Download and Execute Pattern via Curl/Wget

producthighSuspicious File Download From File Sharing Domain Via Curl.EXE

producthighSuspicious File Download From IP Via Curl.EXE

producthighCurl Download And Execute Combination

producthighSuspicious Curl.EXE Download

productmediumSuspicious Curl File Upload - Linux

Show all 7 top matches

productmediumSuspicious Curl Change User Agents - Linux

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Scoring & Timeline

6.8

MEDIUM · CVSS v2 (legacy) · secalert@redhat.com

View on NVD

This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.

v2 Vector

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

Published to NVD31 Jul 2013 · 01:20 PM

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Vendor Advisories

suse-csafopenSUSE-SU-2024:10303-1
suse-csafSUSE-SU-2015:0962-1
usnUSN-1894-1
rhsaRHSA-2013:0983Moderate
rhsaRHSA-2013:1076Important

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://curl.haxx.se/docs/adv_20130622.htmlVendor Advisory

http://lists.opensuse.org/opensuse-updates/2013-07/msg00013.html

http://rhn.redhat.com/errata/RHSA-2013-0983.html

http://www.debian.org/security/2013/dsa-2713

http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html

http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html

Show all 8 references

http://www.securityfocus.com/bid/60737

http://www.ubuntu.com/usn/USN-1894-1

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