Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP…
Priority LOW 32CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive is enabled, using HTTP keywords in TCP inspection rules, and running with rewrite rules that appends to requests, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted pipelined HTTP requests that prevent request realignment from occurring.
Why it matters now
EPSS 0.05569 92nd percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:haproxy:haproxy:1.4:*:*:*:*:*:*:* | 1.4 | Vulnerable | HAProxy |
| cpe:2.3:a:haproxy:haproxy:1.4.20:*:*:*:*:*:*:* | 1.4.20 | Vulnerable | HAProxy |
| cpe:2.3:a:haproxy:haproxy:1.4.22:*:*:*:*:*:*:* | 1.4.22 | Vulnerable | HAProxy |
| cpe:2.3:a:haproxy:haproxy:1.5:dev:*:*:*:*:*:* | 1.5 dev | Vulnerable | HAProxy |
| cpe:2.3:a:haproxy:haproxy:1.5:dev17:*:*:*:*:*:* | 1.5 dev17 | Vulnerable | HAProxy |
- cpe:2.3:a:haproxy:haproxy:1.4:*:*:*:*:*:*:* Versions 1.4 Vulnerable ·HAProxy
- cpe:2.3:a:haproxy:haproxy:1.4.20:*:*:*:*:*:*:* Versions 1.4.20 Vulnerable ·HAProxy
- cpe:2.3:a:haproxy:haproxy:1.4.22:*:*:*:*:*:*:* Versions 1.4.22 Vulnerable ·HAProxy
- cpe:2.3:a:haproxy:haproxy:1.5:dev:*:*:*:*:*:* Versions 1.5 dev Vulnerable ·HAProxy
- cpe:2.3:a:haproxy:haproxy:1.5:dev17:*:*:*:*:*:* Versions 1.5 dev17 Vulnerable ·HAProxy
Remediation
Red Hat 2 advisories
- RHSA-2013:0868 Released 2013-05-28 · Red Hat rating Moderatehaproxy security update
- Red Hat Enterprise Linux Load Balancer (v. 6) haproxy-1.4.22-4.el6_4
- RHSA-2013:0729 Released 2013-04-09 · Red Hat rating Moderatehaproxy security update
- Red Hat OpenShift Enterprise Node haproxy-1.4.22-5.el6op
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Load Balancer (v. 6) | Fixed | RHSA-2013:0868 |
| Red Hat OpenShift Enterprise Node | Fixed | RHSA-2013:0729 |
Timeline
- 2026-10-02 Threatist record created from CVE-2013-1912
- 2026-10-03 Alias added: GHSA-xgv2-5whc-jjqv
References
More Haproxy vulnerabilities
- TI-2020-08973 In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before… CVSS 3.1HIGH 8.8
- TI-2023-21094 HAProxy through 2.0.32, 2.1.x and 2.2.x through 2.2.30, 2.3.x and 2.4.x through 2.4.23… CVSS 3.1HIGH 7.2
- TI-2019-10602 HAProxy through 2.0.2 allows attackers to cause a denial of service (ha_panic) via… CVSS 3.0HIGH 7.5
- TI-2021-17418 An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be… CVSS 3.1HIGH 7.5
- TI-2016-04651 HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote… CVSS 3.0HIGH 7.5
- TI-2026-25946 An issue was discovered in HAProxy before 3.3.6. CVSS 3.1MEDIUM 5.8
Sources
- CVE-2013-1912 · CVE Program
- CVE-2013-1912 · NVD
- FIRST EPSS
- GHSA-xgv2-5whc-jjqv · GitHub Advisory Database · CC BY 4.0
- CVE-2013-1912 · Red Hat security data · CC BY 4.0
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