CVE-2022-2601 & CVE-2022-3775: Multiple GRUB2 vulnerabilities

Security Advisory ID : BSA-2022-2139 Component : GRUB2 Revision : 1.0 Brocade PSIRT has become aware of two grub vulnerabilities. CVE-2022-2601 grub2: A buffer overflow in grubfontconstructglyph can lead to out-of-bound write and possible secure boot by-pass A buffer overflow was found in...

OESA-2022-2118 grub2 security update

GNU GRUB is a Multiboot boot loader. It was derived from GRUB, the GRand Unified Bootloader, which was originally designed and implemented by Erich Stefan Boleyn.Briefly, a boot loader is the first software program that runs when a computer starts. It is responsible for loading and transferring...

CLSA-2022-1669242003 Fix CVE(s): CVE-2022-45063

SECURITY UPDATE: possible RCE when using OSC 50 sequence - debian/patches/CVE-2022-45063.patch: Improve error recovery when setting a bitmap font for the VT100 window, e.g., in case OSC 50 failed, restoring the most recent valid font so that a subsequent OSC 50 reports this correctly. -...

CLSA-2022-1669239895 xterm: Fix of CVE-2022-45063

CVE-2022-45063: improve error recovery when setting a bitmap font for the VT100 window - Add NULL pointer checks in xstrcasecmp and xstrncasecmp to help with error recovery for a missing font...

CLSA-2022-1669238963 xterm: Fix of CVE-2022-45063

CVE-2022-45063: improve error recovery when setting a bitmap font for the VT100 window - Add NULL pointer checks in xstrcasecmp and xstrncasecmp to help with error recovery for a missing font...

CLSA-2022-1669237302 xterm: Fix of CVE-2022-45063

CVE-2022-45063: improve error recovery when setting a bitmap font for the VT100 window - Add NULL pointer checks in xstrcasecmp and xstrncasecmp to help with error recovery for a missing font...

CLSA-2022-1669236294 xterm: Fix of CVE-2022-45063

CVE-2022-45063: improve error recovery when setting a bitmap font for the VT100 window - Add NULL pointer checks in xstrcasecmp and xstrncasecmp to help with error recovery for a missing font...

xterm: Fix of CVE-2022-45063

CVE-2022-45063: improve error recovery when setting a bitmap font for the VT100 window - Add NULL pointer checks in xstrcasecmp and xstrncasecmp to help with error recovery for a missing font...

Buffer Overflow

grub2 is vulnerable to Buffer Overflow. The vulnerability exists in grubfontconstructglyph function which allows an attacker to cause an overflow when calculating the maxglyphsize value by sending a malicious crafted pf2 font...

xterm: Arbitrary Code Execution

Background xterm is a terminal emulator for the X Window system. Description xterm does not correctly handle control characters related to OSC 50 font ops sequence handling. Impact The vulnerability allows text written to the terminal to write text to the terminal's command line. If the terminal'...

GLSA-202211-09 : xterm: Arbitrary Code Execution

The remote host is affected by the vulnerability described in GLSA-202211-09 xterm: Arbitrary Code Execution - xterm before 375 allows code execution via font ops, e.g., because an OSC 50 response may have Ctrl-g and therefore lead to command execution within the vi line-editing mode of Zsh. NOTE...

Malicious code in font-firasans (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware ad02a833089b2dfde5d10b0ac271eebf5e1e2f1202e769e3cbd83e9e68fc1ca0 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

MAL-2022-3097 Malicious code in font-firasans (npm)

--- -= Per source details. Do not edit below this line.=- Source: ghsa-malware ad02a833089b2dfde5d10b0ac271eebf5e1e2f1202e769e3cbd83e9e68fc1ca0 Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be...

The vulnerability of Grub2 operating system loaders, related to the execution of operations outside the buffer boundaries, allows attackers to execute arbitrary code.

The vulnerability of Grub2 operating system loaders is related to the issue where operations occur outside of the buffer in memory when rendering certain Unicode sequences using a specially crafted font. Exploiting this vulnerability allows an attacker to execute arbitrary code...

The vulnerability of the grub_font_construct_glyph() function, a loader for the Grub2 operating system, allows a hacker to execute arbitrary code.

The vulnerability of the grubfontconstructglyph function, a part of the Grub2 operating system loader, is related to the issue where an operation goes beyond the buffer boundaries in memory when processing specially formatted glyphs in the pf2 format. Exploiting this vulnerability allows an...

grub2: Heap based out-of-bounds write when redering certain unicode sequences

A flaw was found in the grub2 font code. When rendering certain unicode sequences, it fails to properly validate the font width and height. These values are further used to access the font buffer, causing possible out-of-bounds writes. A malicious actor may craft a font capable of triggering this...

grub2: Buffer overflow in grub_font_construct_glyph() can lead to out-of-bound write and possible secure boot bypass

A flaw was found where a maliciously crafted pf2 font could lead to an out-of-bounds write in grub2. A successful attack can lead to memory corruption and secure boot circumvention...

xterm before 375 allows code execution via font ops e.g. because an OSC 50 response may have Ctrl-g and therefore lead to command execution within the vi line-editing mode of Zsh. NOTE: font ops are not allowed in the xterm default configurations of some Linux distributions.

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UBUNTU-CVE-2022-45407

If an attacker loaded a font using FontFace on a background worker, a use-after-free could have occurred, leading to a potentially exploitable crash. This vulnerability affects Firefox 107...

[SECURITY] [DSA 5280-1] grub2 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-5280-1 [email protected] https://www.debian.org/security/ Steve McIntyre November 15, 2022 https://www.debian.org/security/faq -...