http/modules/ngx_http_proxy_module.c in nginx 1.1.4 through 1.2.8 and 1.3.0 through 1.4.0, when proxy_pass is used with untrusted HTTP serve
http/modules/ngx_http_proxy_module.c in nginx 1.1.4 through 1.2.8 and 1.3.0 through 1.4.0, when proxy_pass is used with untrusted HTTP servers, allows remote attackers to cause a denial of service (crash) and obtain sensitive information from worker process memory via a crafted proxy response, a similar vulnerability to CVE-2013-2028.
- Published
- Jul 19, 2013
- Updated
- Jun 16, 2026
- EPSS
- 11.9% · 96th percentile
- CWE
- —
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Report tools
Action score
27
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 4 / 30 · 11.9%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
Using nginx? Add it to your stack and be the first to know about CVEs like this one. (Nginx)
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- f5 nginx1.1.4 and later · up to 1.2.8 inclusive
- f5 nginx1.3.9 and later · up to 1.4.0 inclusive
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | nginx | before 1.4.1-1 | 1.4.1-1 |
| Debian:7 | nginx | before 1.2.1-2.2+wheezy1 | 1.2.1-2.2+wheezy1 |
| openSUSE:Tumbleweed | nginx | before 1.11.4-2.5 | 1.11.4-2.5 |
Same product
f5: all recordsOther highest-scoring records for the same primary product.
- CVE-2013-2028The ngx_http_parse_chunked function in http/ngx_http_parse.c in nginx 1.3.9 through 1.4.0 allows remote attackers to cause a denial of servi56Plan
- CVE-2016-0742The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 allows remote attackers to cause a denial of service (invalid pointer dereference55Plan
- CVE-2009-2629Buffer underflow in src/http/ngx_http_parse.c in nginx 0.1.0 through 0.5.37, 0.6.x before 0.6.39, 0.7.x before 0.7.62, and 0.8.x before 0.8.53Plan
- CVE-2013-4547nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 allows remote attackers to bypass intended restrictions via an unescaped space character i50Plan
- CVE-2017-7529Nginx versions since 0.5.6 up to and including 1.13.2 are vulnerable to integer overflow vulnerability in nginx range filter module resultin49Plan
- CVE-2021-23017A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cau46Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:nginx | 1.4.1-1 · Debian:12 | Package registry (OSV) |
| opensuse:nginx | 1.11.4-2.5 · openSUSE:Tumbleweed | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-19-115 · Aug 22, 2019(NGINX Sunucu Güvenlik Güncellemesi)
Technical details
Attack conditions
If successful
- Confidentiality
- P · data can be read
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- P
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
—
CVSS vector
AV:N/AC:M/Au:N/C:P/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.fedoraproject.org/pipermail/package-announce/2013-May/105950.html
- mailman.nginx.org/pipermail/nginx-announce/2013/000114.html
- nginx.org/download/patch.2013.proxy.txt
- seclists.org/oss-sec/2013/q2/291
- secunia.com/advisories/55181
- security.gentoo.org/glsa/glsa-201310-04.xml
- www.debian.org/security/2013/dsa-2721
- www.openwall.com/lists/oss-security/2013/05/13/3
- www.securityfocus.com/bid/59824
- bugzilla.redhat.com/show_bug.cgi?id=962525
- exchange.xforce.ibmcloud.com/vulnerabilities/84172
Vendor advisories and official records. Exploit/PoC links are deliberately left out.