A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that references a variable with a sufficiently large payload, it is possible to overflow the stack buffer, corrupt the stack frame and control execution which could also circumvent Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable content directly into memory. The table is further loaded and executed by the kernel, defeating its Secure Boot lockdown and allowing the attacker to load unsigned code. The highest threat from this vulnerability is to data confidentiality and integrity, as well as system availability.
BSD mailx 8.1.2 and earlier allows remote attackers to execute arbitrary commands via a crafted email address.
A flaw was found in the Linux kernel's implementation of IPMI (remote baseband access). An attacker, with local access to read /proc/ioports, may be able to create a use-after-free condition when the kernel module is unloaded which may result in privilege escalation.
A flaw was found in NFS in the Linux Kernel. An attacker who is able to mount an exported NFS filesystem is able to trigger a null pointer dereference by an invalid NFS sequence.
This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.
Upstream fix:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=01310bb7c9c98752cc763b36532fab028e0f8f81
A flaw was found in systemd-journald. A stack buffer overflow when passing several MB of arguments to a program calling syslog function. This can lead to a denial of service attack or arbitrary code execution in some cases.
An out-of-bounds read vulnerability was found in OpenJPEG 2.1.2, in the j2ktoimage tool. Converting a specially crafted JPEG2000 file to another format could cause the application to crash or, potentially, disclose some data from the heap.
A vulnerability was found in ipa before 4.4. IdM's ca-del, ca-disable, and ca-enable commands did not properly check the user's permissions while modifying CAs in Dogtag. An authenticated, unauthorized attacker could use this flaw to delete, disable, or enable CAs causing various denial of service problems with certificate issuance, OCSP signing, and deletion of secret keys.
Last updated 29 November 2024
Last updated 24 July 2024
A flaw was found in 389 Directory Server, affecting all versions including upstream 1.4.x. An improper handling of the search feature with an extended filter, when read access on <attributename> is enabled, in SetUnicodeStringFromUTF8 function in collate.c, can lead to out-of-bounds memory operations. This may allow a remote unauthenticated attacker to trigger a server crash, thus resulting in denial of service.
External References:
https://pagure.io/389-ds-base/issue/49545
Upstream Patch:
https://pagure.io/389-ds-base/c/14ce2fe0dfa67405dae
BIND was improperly sequencing cleanup operations on upstream recursion fetch contexts, leading in some cases to a use-after-free error that can trigger an assertion failure and crash in named. Affects BIND 9.0.0 to 9.8.x, 9.9.0 to 9.9.11, 9.10.0 to 9.10.6, 9.11.0 to 9.11.2, 9.9.3-S1 to 9.9.11-S1, 9.10.5-S1 to 9.10.6-S1, 9.12.0a1 to 9.12.0rc1.
A flaw was found in 389-ds-base 1.3.6.1. Improper handling of a search filter in slapifiltersprintf in slapd/util.c can lead to remote server crash and denial of service.
Upstream patch:
https://pagure.io/389-ds-base/c/6aa2acdc3cad9
It is possible to execute JavaScript in the parsed RSS feed when RSS feed is viewed as a website, e.g. via “View -> Feed article -> Website” or in the standard format of “View -> Feed article -> default format”.
When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode and this stored data will persist across multiple private browsing mode sessions because it is not cleared when exiting.
PostgreSQL runs under a non-root operating system account, and database superusers have effective ability to run arbitrary code under that system account. Red Hat provides scripts for starting the database server during system boot and for initializing the database. These implementations use file names that the database superuser can replace with symbolic links. As root, the scripts open(), chmod() and/or chown() the log and data files. These issues often suffice for the database superuser to escalate to root privileges when root starts the server or initializes the database.
It was discovered that the Kerberos client implementation in the Libraries component of OpenJDK used the sname field from the plain text part rather than encrypted part of the KDC reply. A man-in-the-middle attacker could possibly use this flaw to impersonate Kerberos services to Java applications acting as Kerberos clients.
File downloads encoded with "blob:" and "data:" URL elements bypassed normal file download checks though the Phishing and Malware Protection feature and its block lists of suspicious sites and files. This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
An attacker within bluetooth transmission range can cause a stack buffer overflow in the Bluetooth system of the Linux kernel while processing pending L2CAP configuration responses from a client. An unauthenticated user able to connect to a system via Bluetooth could use this flaw to potentially execute arbitrary code with root privileges on the system.
External References:
https://www.armis.com/blueborne/ https://access.redhat.com/security/vulnerabilities/blueborne https://access.redhat.com/solutions/3177231 https://access.redhat.com/blogs/product-security/posts/blueborne
An upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e860d2c904d1a9f38a24eb44c9f34b8f915a6ea3
Last updated 24 July 2024
Mercurial prior to version 4.3 is vulnerable to a missing symlink check that can malicious repositories to modify files outside the repository
A race condition issue was found in the way the raw packet sockets implementation in the Linux kernel networking subsystem handled synchronization. A local user able to open a raw packet socket (requires the CAPNETRAW capability) could use this to waste resources in the kernels ring buffer or possibly cause a read-out-of-bounds on the heap possibly panicking the machine.
In a default or common use of Red Hat Enterprise Linux 6 and 7 this issue does not allow an unprivileged local user to use this functionality.
In order to exploit this issue the attacker needs CAPNETRAW capability, which needs to be granted by the administrator to the attacker's account. Since Red Hat Enterprise Linux does not have unprivileged user namespaces enabled by default, local unprivileged users also cannot abuse namespaces to grant this capability.
Upstream patch: http://patchwork.ozlabs.org/patch/800274/
The Developer Tools feature suffered from XUL injection vulnerability due to improper sanitization of the web page source code. In the worst case this could allow arbitrary code execution when opening a malicious page with the style editor tool.
External Reference:
https://www.mozilla.org/en-US/security/advisories/mfsa2017-19/#CVE-2017-7798
Acknowledgements:
Name: the Mozilla project Upstream: Frederik Braun
Same-origin policy protections can be bypassed on pages with embedded iframes during page reloads, allowing the iframes to access content on the top level page, leading to information disclosure.
A mechanism that uses AppCache to hijack a URL in a domain using fallback by serving the files from a sub-path on the domain. This has been addressed by requiring fallback files be inside the manifest directory.
When a page's content security policy (CSP) header contains a "sandbox" directive, other directives are ignored. This results in the incorrect enforcement of CSP. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
The cryptoxmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash). NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750.