CVE-2018-20251
CVE-2018-20251 Vulnerability Analysis & Exploit Intelligence
In WinRAR versions prior to and including 5.61, there is path traversal vulnerability when crafting the filename field of the ACE format. The UNACE module (UNACEV2.dll) creates files and folders as written in the filename field even when WinRAR validator noticed the traversal attempt and requestd to abort the extraction process. the operation is cancelled only after the folders and files were created but prior to them being written, therefore allowing the attacker to create empty files and folders everywhere in the file system.
Published Updated Sources: cvelistV5, checkpoint
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.
Exploitation
Unreported
no source claims exploitation
EPSS
32%
chance of exploitation in 30 days
CVSS base
Unscored
no source published a base score
Affected scope
The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.
Vendors (1)
Products (1)
Weakness & attack patterns
- CWE-693
Attack patterns reported against this CVE. The ATT&CK techniques below are inferred from its weakness class.
- T1574.010Hijack Execution Flow: ServicesFile Permissions Weakness
- T1083File and Directory Discovery
- T1574.005Hijack Execution Flow: Executable Installer File Permissions Weakness
References
3 on the record
- research.checkpoint.com/extracting-code-execution-from-winrar/
x_refsource_MISC
- www.securityfocus.com/bid/106948
vdb-entry, x_refsource_BID
- www.win-rar.com/whatsnew.html
x_refsource_MISC
Elsewhere on this site
- check point software technologiesevery CVE for this vendor
- CWE-693other pages naming this weakness
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.