Headline
CVE-2023-26047: feat: Added case-insensitivity detects the IE octal/hex/unicode entities · dwisiswant0/cwa-filter-rules@d818d16
teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. In teler-waf prior to version v0.2.0 is vulnerable to a bypass attack when a specific case-sensitive hex entities payload with special characters such as CR/LF and horizontal tab is used. This vulnerability allows an attacker to execute arbitrary JavaScript code on the victim’s browser and compromise the security of the web application. An attacker can exploit this vulnerability to bypass common web attack threat rules in teler-waf and launch cross-site scripting (XSS) attacks. The attacker can execute arbitrary JavaScript code on the victim’s browser and steal sensitive information, such as login credentials and session tokens, or take control of the victim’s browser and perform malicious actions. This issue has been patched in version 0.2.0.
Permalink
Browse files
feat: Added case-insensitivity detects the IE octal/hex/unicode entities
Modified the regular expression rule for handling escape characters by adding the case-insensitive `(?i)` flag to the rule. This change ensures that the regular expression will match escape characters regardless of their case, making the rule more flexible and accommodating a larger range of possibilities.
- Loading branch information
Related news
### Description teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. teler-waf prior to version v0.2.0 is vulnerable to a bypass attack when a specific case-sensitive hex entities payload with special characters such as CR/LF and horizontal tab is used. This vulnerability allows an attacker to execute arbitrary JavaScript code on the victim's browser and compromise the security of the web application. ### Impact An attacker can exploit this vulnerability to bypass common web attack threat rules in teler-waf and launch cross-site scripting (XSS) attacks. The attacker can execute arbitrary JavaScript code on the victim's browser and steal sensitive information, such as login credentials and session tokens, or take control of the victim's browser and perform malicious actions. ### Patches Version [v0.2.0](https://github.com/kitabisa/teler-waf/releases/tag/v0.2.0) includes a patch for this vulnerability. ### Workarounds We adv...