WeKnora before 0.8.2 SSRF Guard Bypass via NAT64 IPv6 Addresses
Impact
WeKnora before 0.8.2 contains a server-side request forgery vulnerability in isRestrictedIP() that misclassifies NAT64-prefixed IPv6 addresses as public. Authenticated attackers can supply URLs resolving to NAT64 encodings of internal addresses via web_fetch or URL-based knowledge import to reach internal services or cloud metadata endpoints.
Source excerpt · VulnCheckAffected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
Tencent · WeKnora
Other versions: unaffected
| Version / range | Source status |
|---|---|
| 0.2.11 to before 0.8.2 | affected |
Original source description
WeKnora before 0.8.2 contains a server-side request forgery vulnerability in isRestrictedIP() that misclassifies NAT64-prefixed IPv6 addresses as public. Authenticated attackers can supply URLs resolving to NAT64 encodings of internal addresses via web_fetch or URL-based knowledge import to reach internal services or cloud metadata endpoints.
References
- Source reference github.com/Tencent/WeKnora/issues/4092
- Patch github.com/Tencent/WeKnora/commit/ff818b681f10bc29edbc48fe35f00009dc276bfa
- Patch github.com/Tencent/WeKnora/commit/d7ccd5ba517cc3968e6d5000a2ab0f4b51ef1dda
- Security advisory github.com/Tencent/WeKnora/blob/3d5d8bfcdfeeea266b292b71cea616847af28d0f/internal/utils/security.go
- Release notes github.com/Tencent/WeKnora/releases/tag/v0.8.2
- Source reference github.com/Tencent/WeKnora
- Security advisory www.vulncheck.com/advisories/weknora-before-0.8.2-ssrf-guard-bypass-via-nat64-ipv6-addresses