MEDIUM
CVE-2013-2175
CWE-20Published: August 19, 2013· Updated: Jun 16, 2026
5.0
CVSS v3.1
Official Description
HAProxy 1.4 before 1.4.24 and 1.5 before 1.5-dev19, when configured to use hdr_ip or other "hdr_*" functions with a negative occurrence count, allows remote attackers to cause a denial of service (negative array index usage and crash) via an HTTP header with a certain number of values, related to the MAX_HDR_HISTORY variable.
Technical Analysis
CVE-2013-2175 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:N/AC:L/Au:N/C:N/I:N/A:P
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (14)
→
http://marc.info/?l=haproxy&m=137147915029705&w=2Patch · Third Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2013-1120.htmlThird Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2013-1204.htmlThird Party Advisory
→
http://www.debian.org/security/2013/dsa-2711Third Party Advisory
→
http://www.ubuntu.com/usn/USN-1889-1Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=974259Issue Tracking
→
http://marc.info/?l=haproxy&m=137147915029705&w=2Patch · Third Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2013-1120.htmlThird Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2013-1204.htmlThird Party Advisory
→
http://www.debian.org/security/2013/dsa-2711Third Party Advisory
→
http://www.ubuntu.com/usn/USN-1889-1Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=974259Issue Tracking
Quick Facts
CVE IDCVE-2013-2175
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessCWE-20
CISA KEVNo
Affected4 vendor(s)
PublishedAug 19, 2013
Related CVEs (CWE-20)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2013-2175 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.