Detection evasion in CLR and tips on how to detect such attacks

In terms of costs, the age-old battle that pits attacker versus defender has become very one sided in recent years. Almost all modern attacks and ethical offensive exercises use Mimikatz, SharpHound, SeatBelt, Rubeus, GhostPack and other toolsets available to the community. This so-called...

Heap overflow

An issue was discovered in libxsmm through v1.16.1-93. The JIT code has a heap-based buffer overflow...

Null pointer dereference

An issue was discovered in libxsmm through v1.16.1-93. A NULL pointer dereference exists in JIT code. It allows an attacker to cause Denial of Service...

CVE-2021-39536

CVE-2021-39536: A heap-based buffer overflow in libxsmm’s JIT code affects libxsmm up to v1.16.1-93. The NVD entry confirms a heap-based overflow with CVSS details (high impact on confidentiality, integrity, availability per the 3.1 score). Connected advisories (TencentOS Server 4 and Tencent Lin...

CVE-2021-39535

An issue was discovered in libxsmm through v1.16.1-93. A NULL pointer dereference exists in JIT code. It allows an attacker to cause Denial of Service...

AZL-6594 CVE-2021-38300 affecting package kernel for versions less than 5.10.78.1-1

arch/mips/net/bpfjit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architectur...

DEBIAN-CVE-2021-38300

arch/mips/net/bpfjit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architectur...

UBUNTU-CVE-2021-38300

arch/mips/net/bpfjit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architectur...

CVE-2021-38300

A flaw was found in the Linux kernel. The cBPF JIT compiler may produce machine code with incorrect branches. This flaw allows an unprivileged user to craft anomalous machine code, where the control flow is hijacked to execute arbitrary kernel code. The highest threat from this vulnerability is t...

Security fix for the ALT Linux 10 package firefox-esr version 91.0.1-alt1

Sept. 4, 2021 Andrey Cherepanov 91.0.1-alt1 - New ESR version. - Security fixes: + CVE-2021-29991: Header Splitting possible with HTTP/3 Responses + CVE-2021-29981: Live range splitting could have led to conflicting assignments in the JIT + CVE-2021-29983: Firefox for Android could get stuck in...

Oracle Linux 7 : kernel (ELSA-2021-3327)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-3327 advisory. - redhat: ppc64: CONFIGRTASFILTER Aristeu Rozanski 1906443 CVE-2020-27777 - powerpc/rtas: Fix typo of ibm,open-errinjct in RTAS filter Aristeu Rozanski...

RHEL 7 : kernel (RHSA-2021:3327)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3327 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: out-of-bounds write in...

Security update for MozillaFirefox (important)

openSUSE Security Update: Security update for MozillaFirefox Announcement ID: openSUSE-SU-2021:1184-1 Rating: important References: 1188891 SLE-18626 Cross-References: CVE-2021-29980 CVE-2021-29984 CVE-2021-29985 CVE-2021-29986 CVE-2021-29988 CVE-2021-29989 CVSS scores: CVE-2021-29980 SUSE: 7.5...

SUSE-SU-2021:2774-1 Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues: Firefox Extended Support Release 78.13.0 ESR MFSA 2021-34, bsc1188891: - CVE-2021-29986: Race condition when resolving DNS names could have led to memory corruption - CVE-2021-29988: Memory corruption as a result of incorrect style...

thunderbird security update

CentOS Errata and Security Advisory CESA-2021:3160 An update for thunderbird is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed...

CVE-2021-29982

Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox 91 and Thunderbird 91...

CVE-2021-29982

Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox 91 and Thunderbird 91...

Design/Logic Flaw

Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox 91 and Thunderbird 91...

CVE-2021-29982

Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox 91 and Thunderbird 91...

CVE-2021-29982

CVE-2021-29982 affects Firefox and Thunderbird prior to version 91. Root cause: incorrect JIT optimization causing type confusion, leading to potential leakage of a single memory bit. Connected advisories confirm the issue and describe remediation as upgrading to Firefox/Thunderbird version 91 or...