SUSE-SU-2022:2036-1 Security update for grub2

This update for grub2 fixes the following issues: Security fixes and hardenings for boothole 3 / boothole 2022 bsc1198581 - CVE-2021-3695: Fixed that a crafted PNG grayscale image could lead to out-of-bounds write in heap bsc1191184 - CVE-2021-3696: Fixed that a crafted PNG image could lead to...

SUSE-SU-2022:2035-1 Security update for grub2

This update for grub2 fixes the following issues: This update provides security fixes and hardenings for Boothole 3 / Boothole 2022 bsc1198581 - CVE-2021-3695: Fixed that a crafted PNG grayscale image could lead to out-of-bounds write in heap bsc1191184 - CVE-2021-3696: Fixed that a crafted PNG...

CVE-2022-28735

A flaw was found in grub2. The shimlock verifier from grub2 allows non-kernel files to be loaded when secure boot is enabled, giving the possibility of unverified code or modules to be loaded when it should not be allowed...

CVE-2022-28734

A flaw was found in grub2 when handling split HTTP headers. While processing a split HTTP header, grub2 wrongly advances its control pointer to the internal buffer by one position, which can lead to an out-of-bounds write. This flaw allows an attacker to leverage this issue by crafting a maliciou...

CVE-2022-28733

A flaw was found in grub2 when handling IPv4 packets. This flaw allows an attacker to craft a malicious packet, triggering an integer underflow in grub code. Consequently, the memory allocation for handling the packet data may be smaller than the size needed. This issue causes an out-of-bands wri...

CVE-2021-3696

A flaw was found in grub2 when handling a PNG image header. When decoding the data contained in the Huffman table at the PNG file header, an out-of-bounds write may happen on grub's heap...

CVE-2021-3697

A flaw was found in grub2 when handling JPEG images. This flaw allows an attacker to craft a malicious JPEG image, which leads to an underflow on a grub2's internal pointer, leading to a heap-based out-of-bounds write. Secure-boot mechanisms circumvention and arbitrary code execution may also be...

PT-2023-8570

Name of the Vulnerable Software and Affected Versions GRUB2 affected versions not specified Description The issue is related to the GRUB2's shim lock verifier, which allows non-kernel files to be loaded on shim-powered secure boot systems. This may lead to unverified code and modules being loaded...

grub2 security update

2.02-123.0.3 - Add CVE-2022-28736 to the list JIRA: OLDIS-16371 2.02-123.0.2 - Fix: CVE-2021-3695, CVE-2021-3696, CVE-2021-3697, CVE-2022-28733, CVE-2022-28734, CVE-2022-28735 JIRA: OLDIS-16371 - Various coverity fixes JIRA: OLDIS-16371 - bump SBAT generation...

Oracle Linux 7 : grub2 (ELSA-2022-9469)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9469 advisory. - Add CVE-2022-28736 to the list JIRA: OLDIS-16371 - Fix: CVE-2021-3695, CVE-2021-3696, CVE-2021-3697, CVE-2022-28733, CVE-2022-28734, CVE-2022-28735...

grub2 security update

2.02-0.87.0.21.el79.9 - Add CVE-2022-28736 to the list JIRA: OLDIS-16371 2.02-0.87.0.19.el79.9 - Fix: CVE-2021-3695, CVE-2021-3696, CVE-2021-3697, CVE-2022-28733, CVE-2022-28734, CVE-2022-28735 JIRA: OLDIS-16371 - Various coverity fixes JIRA: OLDIS-16371 - bump SBAT generation JIRA: OLDIS-16371...

PT-2023-8571

Name of the Vulnerable Software and Affected Versions GRUB2 affected versions not specified Description The issue is related to an out-of-bounds write when handling split HTTP headers. When GRUB2's HTTP code processes split HTTP headers, it accidentally moves its internal data buffer point by one...

PT-2022-5548

Name of the Vulnerable Software and Affected Versions grub2 versions prior to 2.12 Description A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To successfully exploit this issue, an attacker needs to perform some...

PT-2022-5549

Name of the Vulnerable Software and Affected Versions grub2 versions prior to 2.12 Description A heap out-of-bounds write may happen during the handling of Huffman tables in the PNG reader, leading to data corruption in the heap space. The impact on Confidentiality, Integrity, and Availability ma...

PT-2023-8569

Name of the Vulnerable Software and Affected Versions GRUB2 affected versions not specified Description The issue is related to a use-after-free vulnerability in the grub cmd chainloader function. This function is used to boot operating systems that do not support multiboot and do not have direct...

grub2 缓冲区错误漏洞

grub2 is a Linux system boot program from the GNU community. A buffer error vulnerability exists in grub2, which can be exploited by an attacker to cause an out-of-bounds write in the heap via a carefully crafted PNG grayscale image...

grub2 资源管理错误漏洞

grub2 is a Linux system boot program from the American GNU community. A resource management error vulnerability exists in grub2 that stems from reuse after release in grubcmdchainloader...

Privilege Escalation

grub2 is vulnerable to privilege escalation. A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can...

Rocky Linux 8 : grub2 (RLSA-2022:2110)

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2022:2110 advisory. - A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read...

Oracle Linux 8 : grub2 (ELSA-2022-2110)

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2022-2110 advisory. - Add CVE-2020-15706, CVE-2020-15707 to the list Orabug: 31225072 - CVE-2021-3981 Incorrect read permission in grub.cfg Tenable has extracted the preceding...