CVE-2018-25032
Memory corruption vulnerability in nokogiri (RubyGems)
What is CVE-2018-25032 About?
This vulnerability in zlib 1.2.11 allows for memory corruption during the deflation (compression) process. It can lead to unpredictable behavior, including crashes or potentially code execution, making exploitation moderately difficult as it relies on specific input patterns.
Affected Software
Technical Details
The memory corruption occurs in zlib version 1.2.11 when specific input data contains 'many distant matches' during the deflation (compression) process. The internal algorithms handling these matches can write to invalid memory locations, corrupting data structures or program control flow. This could lead to a denial of service (application crash) or, in more advanced scenarios, potentially allow for arbitrary code execution if an attacker can precisely control the corrupted memory region.
What is the Impact of CVE-2018-25032?
Successful exploitation may allow attackers to cause an application crash, corrupt data, or potentially achieve arbitrary code execution within the context of the affected application.
What is the Exploitability of CVE-2018-25032?
Exploitation of this vulnerability is complex. It requires crafting specific input data with 'many distant matches' that triggers the memory corruption during the compression process. There are no authentication or privilege requirements beyond the ability to supply input to the zlib library. This is typically a remote vulnerability if an application exposes functionality that compresses user-supplied data, otherwise it could be local. Special conditions involve the precise structure of the input data to trigger the flaw in the deflation algorithm. Risk factors include applications that compress untrusted, user-provided data frequently.
What are the Known Public Exploits?
| PoC Author | Link | Commentary |
|---|---|---|
| Trinadh465 | Link | PoC for CVE-2018-25032 |
| Satheesh575555 | Link | PoC for CVE-2018-25032 |
| Trinadh465 | Link | PoC for CVE-2018-25032 |
What are the Available Fixes for CVE-2018-25032?
Available Upgrade Options
- nokogiri
- <1.13.4 → Upgrade to 1.13.4
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Book a demoAdditional Resources
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VOKNP2L734AEL47NRYGVZIKEFOUBQY5Y
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://security.netapp.com/advisory/ntap-20220526-0009/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JZZPTWRYQULAOL3AW7RZJNVZ2UONXCV4/
- http://seclists.org/fulldisclosure/2022/May/35
- http://www.openwall.com/lists/oss-security/2022/03/26/1
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JZZPTWRYQULAOL3AW7RZJNVZ2UONXCV4
- http://seclists.org/fulldisclosure/2022/May/35
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XOKFMSNQ5D5WGMALBNBXU3GE442V74WU/
What are Similar Vulnerabilities to CVE-2018-25032?
Similar Vulnerabilities: CVE-2016-9840 , CVE-2016-9841 , CVE-2016-9842 , CVE-2016-9843 , CVE-2018-25031
