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Vulnerability record · CVE-2013-0249 · published 8 March 2013

CVE-2013-0249: Haxx curl memory buffer overflow vulnerability

Haxx · Curl

Stack-based buffer overflow in the Curl_sasl_create_digest_md5_message function in lib/curl_sasl.c in curl and libcurl 7.26.0 through 7.28.1, when negotiating SASL DIGEST-MD5 authentication, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in the realm parameter in a (1) POP3, (2) SMTP or (3) IMAP message.

7.5 CVSS 2.0 High EPSS 22% · top 2.4% CWE-119 · Memory buffer overflow
7.5CVSS 2.0 base score
22%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
26References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Stack-based buffer overflow in the Curl_sasl_create_digest_md5_message function in lib/curl_sasl.c in curl and libcurl 7.26.0 through 7.28.1, when negotiating SASL DIGEST-MD5 authentication, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in the realm parameter in a (1) POP3, (2) SMTP or (3) IMAP message.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://blog.volema.com/curl-rce.html
http://curl.haxx.se/docs/adv_20130206.html Vendor Advisory
http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-February/099140.html
http://nakedsecurity.sophos.com/2013/02/10/anatomy-of-a-vulnerability-curl-web-download-toolkit-holed-by-authentication-
http://packetstormsecurity.com/files/120147/cURL-Buffer-Overflow.html
http://packetstormsecurity.com/files/120170/Slackware-Security-Advisory-curl-Updates.html
http://www.exploit-db.com/exploits/24487 Exploit
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
http://www.osvdb.org/89988
http://www.securityfocus.com/bid/57842
http://www.securitytracker.com/id/1028093
http://www.ubuntu.com/usn/USN-1721-1 Vendor Advisory
http://blog.volema.com/curl-rce.html
http://curl.haxx.se/docs/adv_20130206.html Vendor Advisory
http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-February/099140.html
http://nakedsecurity.sophos.com/2013/02/10/anatomy-of-a-vulnerability-curl-web-download-toolkit-holed-by-authentication-
http://packetstormsecurity.com/files/120147/cURL-Buffer-Overflow.html
http://packetstormsecurity.com/files/120170/Slackware-Security-Advisory-curl-Updates.html
http://www.exploit-db.com/exploits/24487 Exploit
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
http://www.osvdb.org/89988
http://www.securityfocus.com/bid/57842
http://www.securitytracker.com/id/1028093
http://www.ubuntu.com/usn/USN-1721-1 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2013-0249), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.