CVE-2010-20112 json
Amlibweb NetOpacs webquery.dll Stack Buffer Overflow
published last yr. modified 4mo ago also EUVD-2010-5308
- cvss
- 9.3
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 76%
- public exploits
- 1
- Metasploit
Summary
Amlib’s NetOpacs webquery.dll contains a stack-based buffer overflow vulnerability triggered by improper handling of HTTP GET parameters. Specifically, the application fails to enforce bounds on input supplied to the app parameter, allowing excessive data to overwrite memory structures including the Structured Exception Handler (SEH). Additionally, malformed parameter names followed by an equals sign may result in unintended control flow behavior. This vulnerability is exposed through IIS and affects legacy Windows deployments
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Check with FencerTimeline
- First public exploit (Metasploit exploit/windows/http/amlibweb_webquerydll_app)
- Published
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- last yr.
Exploit prediction
1.67% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- Metasploit exploit/windows/http/amlibweb_webquerydll_app Amlibweb NetOpacs webquery.dll Stack Buffer Overflow metasploit exploit, normal rank, 2010-08-03
- raw.githubusercontent.com https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/amlibweb_webquerydll_app.rb referenced PoC, tagged "exploit" by a source, unverified
- exploit-db.com https://www.exploit-db.com/exploits/16793 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- Amlib Amlibweb Library Management System
Classification
- Weakness
-
- CWE-121 Stack-based Buffer Overflow
References
-
raw.githubusercontent.com
/rapid7/metasploit-framework/master/modules/exploits/windows/http/amlibweb_webquerydll_app.rb
exploit
-
exploit-db.com
/exploits/16793
exploit
-
fortiguard.com
/encyclopedia/ips/24002
third-party-advisory
-
advisories.checkpoint.com
/defense/advisories/public/2013/cpai-2013-1344.html
third-party-advisory
-
amlib.co.uk
/product/product.aspx?menuId=top_products
product
-
vulncheck.com
/advisories/amlibweb-netopacs-stack-buffer-overflow
third-party-advisory
Sources
- CVE List CVE-2010-20112
- NVD CVE-2010-20112
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