Date: Wed, 15 Apr 2020 14:42:34 +0000 From: Marco Ivaldi <marco.ivaldi@...iaservice.net> To: "Fulldisclosure@...lists.org" <Fulldisclosure@...lists.org>, "oss-security@...ts.openwall.com" <oss-security@...ts.openwall.com> Subject: CVE-2020-2771, CVE-2020-2851, CVE-2020-2944 - Multiple vulnerabilities in Oracle Solaris Hello, Please find attached 3 recent advisories for the following vulnerabilities, fixed in Oracle's Critical Patch Update (CPU) of April 2020: CVE-2020-2771. A difficult to exploit heap-based buffer overflow in setuid root whodo and w binaries distributed with Solaris allows local users to corrupt memory and potentially execute arbitrary code in order to escalate privileges. CVE-2020-2851. A difficult to exploit stack-based buffer overflow in the _DtCreateDtDirs() function in the Common Desktop Environment version distributed with Oracle Solaris 10 1/13 (Update 11) and earlier may allow local users to corrupt memory and potentially execute arbitrary code in order to escalate privileges via a long X11 display name. The vulnerable function is located in the libDtSvc library and can be reached by executing the setuid program dtsession. CVE-2020-2944. A buffer overflow in the _SanityCheck() function in the Common Desktop Environment version distributed with Oracle Solaris 10 1/13 (Update 11) and earlier allows local users to gain root privileges via a long calendar name or calendar owner passed to sdtcm_convert in a malicious calendar file. For further details and some background information, please refer to: https://techblog.mediaservice.net/2020/04/cve-2020-2944-local-privilege-escalation-via-cde-sdtcm_convert/ https://github.com/0xdea/exploits/blob/master/solaris/raptor_sdtcm_conv.c https://0xdeadbeef.info/ PS. It looks like Bugtraq is not accepting posts anymore: it finally happened, the end of an era... -- Marco Ivaldi, Offensive Security Manager CISSP, OSCP, QSA, ASV, OPSA, OPST, OWSE, LA27001, PRINCE2F @Mediaservice.net S.r.l. con Socio Unico https://www.mediaservice.net/ View attachment "2020-05-cde-sdtcm_convert.txt" of type "text/plain" (3762 bytes) View attachment "2020-06-cde-libDtSvc.txt" of type "text/plain" (6462 bytes) View attachment "2020-07-solaris-whodo-w.txt" of type "text/plain" (8786 bytes)
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