Date: Tue, 30 Aug 2022 16:25:12 +0200 From: Charles Fol <c.fol@...fo.fr> To: oss-security@...ts.openwall.com Subject: CVE-2022-31790 CVE-2022-31789: Watchguard XTM/Firebox firewalls: Multiple vulnerabilities Hello, While performing a red-team assessment we discovered a few vulnerabilities on Watchguard firewalls of the XTM/Firebox brand: Here are the different CVEs and WSGA references for the bugs: - Xpath time-based injection in wgcgi: CVE-2022-31790, WSGA-2022-00017 - Integer overflow leading to UAF/overflow in wgagent: CVE-2022-31789, WSGA-2022-00015 - Local privilege escalation from nobody to root: WSGA-2022-00018 Combined, the two latter bugs lead to pre-authentication remote code execution as root on XTM/Firebox devices. Although the second bug is present in both XTM and Firebox models, the exploitation differs as the libc (ptmalloc) version is different, (respectively 2.19 and 2.28). A very in-depth blog-post is available here: https://www.ambionics.io/blog/hacking-watchguard-firewalls References: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2022-00015 https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2022-00017 https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2022-00018 Regards, Charles
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