CVE-2012-1180: Use-after-free vulnerability in nginx before 1.0.14 and 1.1.x before 1.1.17 allows remote HTTP servers to obtain sensitive information from…
Noroxi assessment
Priority: Monitor (action score 23/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 10.5% (FIRST EPSS); higher than 95.8% of all records.
- No special conditions are required; it is repeatable.
- Fixed version: nginx (Debian:12) 1.1.17-1; nginx (Debian:6.0) 0.7.67-3+squeeze2.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to nginx (Debian:12) 1.1.17-1; nginx (Debian:6.0) 0.7.67-3+squeeze2 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Use-after-free vulnerability in nginx before 1.0.14 and 1.1.x before 1.1.17 allows remote HTTP servers to obtain sensitive information from process memory via a crafted backend response, in conjunction with a client request.
- Published
- Apr 17, 2012
- Updated
- Jun 16, 2026
- EPSS
- 10.5% · 95th percentile
- CWE
- CWE-416
Report tools
Action score
23
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 3 / 30 · 10.5%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is nginx on your server exposed to the internet?Run a port scan
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| f5 | nginx | cpe:2.3:a:f5:nginx |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Using nginx? Add it to your stack and be the first to know about CVEs like this one. (Nginx)
Is nginx on your server exposed to the internet?
The free port scanner finds the open ports on your server and matches the service versions it can read against known vulnerabilities. No account needed.
Run a port scanAffected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- f5 nginx0.1.0 and later · before 1.0.14
- f5 nginx1.1.0 and later · before 1.1.17
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 1.1.17-1 | 1.1.17-1 |
| Debian:6.0 | nginx | before 0.7.67-3+squeeze2 | 0.7.67-3+squeeze2 |
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…56Plan
- 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…55Plan
- 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
Published before and after this one in the same product
- ← EarlierCVE-2010-2266Jun 15, 2010 · nginx 0.8.36 allows remote attackers to cause a denial of service (crash) via certain encoded directory traversal sequences that trigger…26Monitor
- ← EarlierCVE-2011-4315Dec 8, 2011 · Heap-based buffer overflow in compression-pointer processing in core/ngx_resolver.c in nginx before 1.0.10 allows remote resolvers to cause…29Monitor
- Later →CVE-2012-2089Apr 17, 2012 · Buffer overflow in ngx_http_mp4_module.c in the ngx_http_mp4_module module in nginx 1.0.7 through 1.0.14 and 1.1.3 through 1.1.18, when the…30Monitor
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 | 1.1.17-1 · Debian:12 | 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.
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
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)
Not on record for this CVE: EPSS history · researcher credit · variant or chain candidate · public bounty program.
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- none
- Availability
- none
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-416 · Use After FreeCVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
nvd-primary
Root cause
After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.
The bug in code
The whole CWE-416 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
free(dev->buf);
/* ... another thread is still running ... */
process(dev->buf);Fixed
lock(&dev->lock);
free(dev->buf);
dev->buf = NULL;
unlock(&dev->lock);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 (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- lists.fedoraproject.org/pipermail/package-announce/2012-March/076646.html
- lists.fedoraproject.org/pipermail/package-announce/2012-March/076671.html
- nginx.org/download/patch.2012.memory.txt
- nginx.org/en/security_advisories.html
- osvdb.org/80124
- seclists.org/bugtraq/2012/Mar/65
- secunia.com/advisories/48465
- secunia.com/advisories/48577
- security.gentoo.org/glsa/glsa-201203-22.xml
- trac.nginx.org/nginx/changeset/4530/nginx
- trac.nginx.org/nginx/changeset/4531/nginx
- www.debian.org/security/2012/dsa-2434
- www.mandriva.com/security/advisories?name=MDVSA-2012:043
- www.openwall.com/lists/oss-security/2012/03/15/5
- www.openwall.com/lists/oss-security/2012/03/15/9
- www.securityfocus.com/bid/52578
- www.securitytracker.com/id?1026827
- bugzilla.redhat.com/show_bug.cgi?id=803856
- exchange.xforce.ibmcloud.com/vulnerabilities/74191
Vendor advisories and official records. Exploit/PoC links are deliberately left out.