CVE-2019-14422 Code injection in n/a
Attackers can execute arbitrary code via malicious Excel macros by exploiting the Tsvncmd URI handler's lack of macro security warnings during diff operations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-14422?
CVE-2019-14422 is a high-severity code injection vulnerability in n/a, published on 15 Aug 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An issue was discovered in in TortoiseSVN 1.12.1. The Tsvncmd: URI handler allows a customised diff operation on Excel workbooks, which could be used to open remote workbooks without protection from macro security settings to execute arbitrary code. A tsvncmd:command:diff?path:[file1]?path2:[file2] URI will execute a customised diff on [file1] and [file2] based on the file extension. For xls files, it will execute the script diff-xls.js using wscript, which will open the two files for analysis without any macro security warning. An attacker can exploit this by putting a macro virus in a network drive, and force the victim to open the workbooks and execute the macro inside.
Which versions are affected by CVE-2019-14422?
It affects 1 product.
Products include Tortoisesvn Tortoisesvn.
How do I fix CVE-2019-14422?
No fix has been published for CVE-2019-14422 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2019-14422 being exploited?
There is no known exploitation of CVE-2019-14422 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Sources
Also known as GHSA-4gp2-c6v2-cw7v.