Astra Linux – Vulnerability in Firefox and Thunderbird

By injecting a cookie with certain special characters, an attacker on a shared subdomain that is not in a secure context can set and overwrite cookies from a secure context. This leads to session fixation and other attacks. This vulnerability affects Firefox ESR 102.3, Thunderbird 102.3, and...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read without sufficient bounds checking, assuming that the USB device provides valid values. If exploited properly, an attacker could cause memory corruption, leading to arbitrary code...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking, allowing a privileged attacker to remove address ranges from memory. This creates an opportunity to circumvent SecureBoot protections after proper analysis of grub’s memory layout. The...

Astra Linux – Vulnerability in grub2

A flaw was discovered in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered them was unloaded, resulting in a use-after-free vulnerabilit...

Astra Linux – Vulnerability in Thunderbird

When an HTTPS page is embedded in an HTTP page, and a service worker is registered for the former, the service worker could intercept the request for the secure page. This occurs even though the iframe does not belong to a secure context due to the insecure framing. This vulnerability affects...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06. Variable names present in the supplied command line are expanded into their corresponding variable contents, using a 1 kB stack buffer for temporary storage. However, there is insufficient bounds checking. If the function is called with a...

Astra Linux – Vulnerability in curl

libcurl will reuse a previously established connection even when options related to TLS or SSH have been changed, which should prevent such reuses. libcurl stores previously used connections in a connection pool, allowing for reuse if one of them matches the current setup. However, several TLS an...

Astra Linux – Vulnerability in libnbd

A flaw was discovered in libnbd. A malicious actor could exploit this by convincing libnbd to open a specially crafted Uniform Resource Identifier URI. This vulnerability arises because non-standard hostnames starting with ‘-o’ are incorrectly interpreted as arguments for the Secure Shell SSH...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: soc: amlogic: Fixed a refcount leak in meson-secure-pwrc.c. In mesonsecurepwrcprobe, there is a refcount leak in one fail path...

Astra Linux – Vulnerability in edk2

In Ubuntu’s EDK2, a insecure default setting was left enabled, allowing UEFI Shell to be used. This enables an attacker with access to the operating system to bypass Secure Boot...

Astra Linux – Vulnerability in grub2

A out-of-bounds write flaw was discovered in grub2’s NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, resulting in corruption of grub’s heap metadata. In some cases, the attack may also corrupt the UEFI firmware heap metadata. As a...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM – Use kzalloc for SEV ioctl interfaces to prevent kernel data leaks. For some SEV ioctl interfaces, the length parameter passed may be less than or equal to SEVFWBLOBMAXSIZE, but larger than the data returned by the PSP...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: fs: export anoninodemakesecureinode and fix the issue with secretmem LSM bypass. The anoninodemakesecureinode function was exported to allow KVM guestmemfd to create anonymous inodes with proper security context. This replaces...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: - Block: Fixed integer overflow in BLKSECDISCARD. - I independently rediscovered this issue by making the commit: 22d24a544b0d49bbcbd61c8c0eaf77d3c9297155. - Block: Fixed overflow in blkioctldiscard. But there’s still a proble...

Astra Linux – Vulnerability in PHP 7.3

In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23, and 7.4.x below 7.4.11, when PHP processes incoming HTTP cookie values, the cookie names are url-decoded. This may result in cookies with prefixes like Host being confused with cookies that are decoded with such prefixes. As a consequence,...

Astra Linux – Vulnerability in Twisted

Twisted is an event-based framework for internet applications, compatible with Python 3.6+. Before version 22.2.0, Twisted’s SSH client and server implementations allowed accepting an infinite amount of data for the peer’s SSH version identifier. This resulted in a buffer that consumed all...

Astra Linux – Vulnerability in grub2

When reading the .mo file in grubmofileopen, grub2 fails to verify an integer overflow during the allocation of its internal buffer. A specially crafted .mo file may cause the buffer size calculation to overflow, resulting in out-of-bound reads and writes. This flaw allows an attacker to leak...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. The calculation of the translation buffer when reading a language .mo file in grubgettextgetstrfromposition may overflow, resulting in an out-of-bound write. This issue can be exploited by an attacker to overwrite grub2’s sensitive heap data, ultimately allowing th...

Astra Linux – Vulnerability in Firefox

When a secure cookie exists in the Firefox cookie jar, an insecure cookie for the same domain could be created. This should have resulted in a silent failure. This could lead to a discrepancy in the expected results when reading from the secure cookie. This vulnerability affects Firefox for Andro...

Astra Linux – Vulnerability in python-urllib3

The urllib3 library before version 1.24.2 in Python mishandles certain cases where the desired set of CA certificates differs from the CA certificates stored in the operating system’s store. As a result, SSL connections succeed in situations where a verification failure would be the correct...