CVE-2018-19965

Technical details about CVE-2018-19965 (Xen) are not provided in the connected documents. The initial description lacks vendor/product/version/root-cause/fix specifics. Monitor for updates from Xen advisories.

CVE-2018-19965

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service host OS crash because GP0 can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 aka Meltdown mitigation...

CVE-2018-19965: Undefined Security Weakness

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service host OS crash because GP0 can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 aka Meltdown mitigation...

insufficient TLB flushing / improper large page mappings with AMD IOMMUs

ISSUE DESCRIPTION In order to be certain that no undue access to memory is possible anymore after IOMMU mappings of this memory have been removed, Translation Lookaside Buffers TLBs need to be flushed after most changes to such mappings. Xen bypassed certain IOMMU flushes on AMD x86 hardware...

Citrix XenServer Security Update

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that have deployment-dependent impacts. These issues affect the following supported versions of Citrix XenServer: Citrix XenServer 7.6 Citrix XenServer 7.5 Citrix XenServer 7.1 LTSR CU1 Citrix...

PT-2018-2672

Name of the Vulnerable Software and Affected Versions Xen versions prior to 4.12 Description An issue in Xen allows 64-bit PV guest OS users to cause a denial of service, resulting in a host OS crash. This occurs because a non-canonical address can be passed to the TLB flushing code, leading to a...

Information Disclosure

undertow-core is vulnerable to information disclosure. The library does not properly flush the bytebuffer after handling response requests after the write function is called. The flushing function then proceeds to write out the contents of the writevBuffer which could contain sensitive informatio...

Information disclosure

An information leak vulnerability was found in Undertow. If all headers are not written out in the first write call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests...

DEBIAN-CVE-2018-14642

An information leak vulnerability was found in Undertow. If all headers are not written out in the first write call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests...

CVE-2018-14642: Exposure of Sensitive Information to an Unauthorized Actor

An information leak vulnerability was found in Undertow. If all headers are not written out in the first write call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests...

PT-2018-12636

Name of the Vulnerable Software and Affected Versions Undertow affected versions not specified Description An information leak issue was discovered. It occurs when not all headers are written out in the first write call, causing the buffer flushing code to write out the full contents of the...

Linux/x86 - execve(/sbin/iptables -F) Shellcode (70 bytes)

Author: zillion Email: email protected Home: http://www.safemode.org Linux x86 shellcode that does an execve of /sbin/iptables -F in order to flush activated firewall rules. File: flush-iptables-shell.c / This shellcode will do /sbin/iptables -F Written by email protected / char shellcode=...

USN-3405-1: Linux kernel vulnerabilities

It was discovered that a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2017-11176 Huang Weller discovered that the ext4 filesyste...

Cisco ASA OSPF LSA Manipulation Vulnerability (cisco-sa-20170727-ospf)

Cisco ASA is affected by a vulnerability involving the Open Shortest Path First OSPF Routing Protocol Link State Advertisement LSA database. This vulnerability could allow an unauthenticated, remote attacker to take full control of the OSPF Autonomous System AS domain routing table, allowing the...

DEBIAN-CVE-2017-7495

fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new...

UBUNTU-CVE-2017-7495

fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new...

kernel security and bug fix update

3.10.0-327.18.2.OL7 - Oracle Linux certificates Alexey Petrenko 3.10.0-327.18.2 - lib keys: Fix ASN.1 indefinite length object parsing David Howells 1308814 1308815 CVE-2016-0758 3.10.0-327.18.1 - scsi bnx2fc: Fix FCP RSP residual parsing Maurizio Lombardi 1322279 1306342 - mm madvise: fix...

Debian Security Advisory DSA 3503-1 (linux - security update)

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service, information leak or data loss. CVE-2013-4312 Tetsuo Handa discovered that users can use pipes queued on local Unix sockets to allocate an unfair share of kernel memory,...

FreeBSD : django -- Fixed session flushing in the cached_db backend (48504af7-07ad-11e5-879c-00e0814cab4e)

The Django project reports : A change to session.flush in the cacheddb session backend in Django 1.8 mistakenly sets the session key to an empty string rather than None. An empty string is treated as a valid session key and the session cookie is set accordingly. Any users with an empty string in...

django -- Fixed session flushing in the cached_db backend

The Django project reports: A change to session.flush in the cacheddb session backend in Django 1.8 mistakenly sets the session key to an empty string rather than None. An empty string is treated as a valid session key and the session cookie is set accordingly. Any users with an empty string in...