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fc773115 |
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15-Feb-2024 |
Cy Schubert <cy@FreeBSD.org> |
heimdal: Fix NULL deref A flawed logical condition allows a malicious actor to remotely trigger a NULL pointer dereference using a crafted negTokenInit token. Upstream notes: Reported to Heimdal by Michał Kępień <michal@isc.org>. From the report: Acknowledgement --------------- This flaw was found while working on addressing ZDI-CAN-12302: ISC BIND TKEY Query Heap-based Buffer Overflow Remote Code Execution Vulnerability, which was reported to ISC by Trend Micro's Zero Day Security: CVE-2022-3116 Obtained from: upstream 7a19658c1 MFC after: 1 week
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ed549cb0 |
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08-Nov-2022 |
Cy Schubert <cy@FreeBSD.org> |
heimdal: Fix multiple security vulnerabilities The following issues are patched: - CVE-2022-42898 PAC parse integer overflows - CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and arcfour - CVE-2021-44758 NULL dereference DoS in SPNEGO acceptors - CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec Note that CVE-2022-44640 is a severe vulnerability, possibly a 10.0 on the Common Vulnerability Scoring System (CVSS) v3, as we believe it should be possible to get an RCE on a KDC, which means that credentials can be compromised that can be used to impersonate anyone in a realm or forest of realms. Heimdal's ASN.1 compiler generates code that allows specially crafted DER encodings of CHOICEs to invoke the wrong free function on the decoded structure upon decode error. This is known to impact the Heimdal KDC, leading to an invalid free() of an address partly or wholly under the control of the attacker, in turn leading to a potential remote code execution (RCE) vulnerability. This error affects the DER codec for all extensible CHOICE types used in Heimdal, though not all cases will be exploitable. We have not completed a thorough analysis of all the Heimdal components affected, thus the Kerberos client, the X.509 library, and other parts, may be affected as well. This bug has been in Heimdal's ASN.1 compiler since 2005, but it may only affect Heimdal 1.6 and up. It was first reported by Douglas Bagnall, though it had been found independently by the Heimdal maintainers via fuzzing a few weeks earlier. While no zero-day exploit is known, such an exploit will likely be available soon after public disclosure. - CVE-2019-14870: Validate client attributes in protocol-transition - CVE-2019-14870: Apply forwardable policy in protocol-transition - CVE-2019-14870: Always lookup impersonate client in DB Sponsored by: so (philip) Obtained from: so (philip) Tested by: philip, cy MFC after: immediately
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fe0506d7 |
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09-Mar-2010 |
Marcel Moolenaar <marcel@FreeBSD.org> |
Create the altix project branch. The altix project will add support for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting is a two-module system, consisting of a base compute module and a CPU expansion module. SGI's NUMAFlex architecture can be an excellent platform to test CPU affinity and NUMA-aware features in FreeBSD.
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