Format string

The pygrub boot loader emulator in Xen, when nul-delimited output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via NUL bytes in the bootloader configuration file...

CVE-2016-9379

The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file...

UBUNTU-CVE-2016-9379

The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file...

CVE-2016-9380

CVE-2016-9380 affects the Xen pygrub boot loader emulator. When nul-delimited output is requested, a local pygrub-using guest OS administrator can read or delete arbitrary files on the host by manipulating the bootloader configuration with NUL bytes. The vulnerability arises from how pygrub outpu...

CVE-2016-9379

The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file...

CVE-2016-9379

The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file...

CVE-2016-9380

The pygrub boot loader emulator in Xen, when nul-delimited output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via NUL bytes in the bootloader configuration file...

CVE-2016-9380

The pygrub boot loader emulator in Xen, when nul-delimited output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via NUL bytes in the bootloader configuration file...

CVE-2016-9379

The CVE-2016-9379 issue affects the Xen pygrub boot loader emulator: when S-expression output is requested, string quotes and S-expressions in the bootloader config can cause information disclosure (read/delete host files) and potential privilege escalation. The vulnerability is caused by delimit...

Security update for xen (important)

This updates xen to version 4.4.406 to fix the following issues: - An unprivileged user in a guest could gain guest could escalate privilege to that of the guest kernel, if it had could invoke the instruction emulator. Only 64-bit x86 HVM guest were affected. Linux guest have not been vulnerable...

Security update for xen (important)

This updates xen to version 4.5.5 to fix the following issues: - An unprivileged user in a guest could gain guest could escalate privilege to that of the guest kernel, if it had could invoke the instruction emulator. Only 64-bit x86 HVM guest were affected. Linux guest have not been vulnerable...

SUSE SLES11 Security Update : xen (SUSE-SU-2016:3273-1)

This update for xen fixes several issues. These security issues were fixed : - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host bsc1011652 - CVE-2016-9386: x86 null segments were not always treated as unusable allowing ...

openSUSE Security Update : xen (openSUSE-2016-1477)

xen was updated to version 4.7.1 to fix 17 security issues. These security issues were fixed : - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host bsc1011652. - CVE-2016-9386: x86 null segments were not always treated as...

Security update for xen (important)

xen was updated to version 4.7.1 to fix 17 security issues. These security issues were fixed: - CVE-2016-9637: ioport array overflow allowing a malicious guest administrator can escalate their privilege to that of the host bsc1011652. - CVE-2016-9386: x86 null segments were not always treated as...

Debian DSA-3729-1 : xen - security update

Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2016-7777 XSA-190 Jan Beulich from SUSE discovered that Xen does not properly honor CR0.TS and CR0.EM for x86 HVM guests, potentially...

Fedora 24 : xen (2016-95c104a4c6)

xen : various security flaws 1397383 x86 null segments not always treated as unusable XSA-191, CVE-2016-9386 x86 task switch to VM86 mode mis-handled XSA-192, CVE-2016-9382 x86 segment base write emulation lacking canonical address checks XSA-193, CVE-2016-9385 x86 64-bit bit test instruction...

Citrix XenServer Multiple Vulnerabilities (CTX218775)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities : - A flaw exists in the sniffnetware function within file tools/pygrub/src/pygrub when handling string quotes and S-expressions in the bootloader whenev...

FreeBSD : xen-tools -- delimiter injection vulnerabilities in pygrub (59f79c99-ba4d-11e6-ae1b-002590263bf5)

The Xen Project reports : pygrub, the boot loader emulator, fails to quote or sanity check its results when reporting them to its caller. A malicious guest administrator can obtain the contents of sensitive host files an information leak. Additionally, a malicious guest administrator can cause...

Fedora 23 : xen (2016-68b71978a1)

xen : various security flaws 1397383 x86 null segments not always treated as unusable XSA-191, CVE-2016-9386 x86 task switch to VM86 mode mis-handled XSA-192, CVE-2016-9382 x86 segment base write emulation lacking canonical address checks XSA-193, CVE-2016-9385 x86 64-bit bit test instruction...

Debian DLA-720-1 : xen security update

Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems : CVE-2016-9379, CVE-2016-9380 XSA-198 pygrub, the boot loader emulator, fails to quote or sanity check its results when reporting them to its...