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Qualcomm Chipsets and Lenovo BIOS Get Security Updates to Fix Multiple Flaws

Qualcomm Chipsets and Lenovo BIOS Get Security Updates to Fix Multiple Flaws

Jan 04, 2023 Firmware Security
Qualcomm on Tuesday  released patches  to address multiple security flaws in its chipsets, some of which could be exploited to cause information disclosure and memory corruption. The five vulnerabilities -- tracked from CVE-2022-40516 through CVE-2022-40520 -- also impact Lenovo ThinkPad X13s laptops, prompting the Chinese PC maker to issue BIOS updates to plug the security holes. The list of flaws is as follows - CVE-2022-40516, CVE-2022-40517 & CVE-2022-40520  (CVSS scores: 8.4) - Memory corruption in Core due to  stack-based buffer overflow CVE-2022-40518 & CVE-2022-40519  (CVSS scores: 6.8) - Information disclosure due to  buffer over-read  in Core Stack-based buffer overflow vulnerabilities can result in severe impacts, such as data corruption, system crashes, and arbitrary code execution. Buffer over-reads, on the other hand, can be weaponized to read out-of-bounds memory, leading to the exposure of secret data. Successful exploitation of the aforementioned flaw
Researchers Uncover UEFI Secure Boot Bypass in 3 Microsoft Signed Boot Loaders

Researchers Uncover UEFI Secure Boot Bypass in 3 Microsoft Signed Boot Loaders

Aug 12, 2022
A security feature bypass vulnerability has been uncovered in three signed third-party Unified Extensible Firmware Interface ( UEFI ) boot loaders that allow bypass of the UEFI Secure Boot feature. "These vulnerabilities can be exploited by mounting the EFI System Partition and replacing the existing bootloader with the vulnerable one, or modifying a UEFI variable to load the vulnerable loader instead of the existing one," hardware security firm Eclypsium  said  in a report shared with The Hacker News. The following  vendor-specific boot loaders , which were signed and authenticated by Microsoft, have been found vulnerable to the bypass and have been patched as part of the tech giant's  Patch Tuesday update  released this week - Eurosoft Boot Loader ( CVE-2022-34301 ) New Horizon Data Systems Inc Boot Loader ( CVE-2022-34302 ), and Crypto Pro Boot Loader ( CVE-20220-34303 ) Secure Boot is a  security standard  designed to thwart malicious programs from loading w
Experts Uncover New 'CosmicStrand' UEFI Firmware Rootkit Used by Chinese Hackers

Experts Uncover New 'CosmicStrand' UEFI Firmware Rootkit Used by Chinese Hackers

Jul 25, 2022
An unknown Chinese-speaking threat actor has been attributed to a new kind of sophisticated Unified Extensible Firmware Interface ( UEFI ) firmware rootkit called  CosmicStrand . "The rootkit is located in the firmware images of Gigabyte or ASUS motherboards, and we noticed that all these images are related to designs using the H81 chipset," Kaspersky researchers  said  in a new report published today. "This suggests that a common vulnerability may exist that allowed the attackers to inject their rootkit into the firmware's image." Victims identified are said to be private individuals located in China, Vietnam, Iran, and Russia, with no discernible ties to any organization or industry vertical. Rootkits, which are malware implants that are capable of embedding themselves in the deepest layers of the operating system, have morphed from a rarity to an increasingly common occurrence in the threat landscape, equipping threat actors with stealth and persistence f
New UEFI Firmware Vulnerabilities Impact Several Lenovo Notebook Models

New UEFI Firmware Vulnerabilities Impact Several Lenovo Notebook Models

Jul 13, 2022
Consumer electronics maker Lenovo on Tuesday  rolled out fixes  to contain three security flaws in its UEFI firmware affecting over 70 product models. "The vulnerabilities can be exploited to achieve arbitrary code execution in the early phases of the platform boot, possibly allowing the attackers to hijack the OS execution flow and disable some important security features," Slovak cybersecurity firm ESET  said  in a series of tweets. Tracked as CVE-2022-1890, CVE-2022-1891, and CVE-2022-1892, all three bugs relate to  buffer overflow vulnerabilities  that have been described by Lenovo as leading to privilege escalation on affected systems. Martin Smolár from ESET has been credited with reporting the flaws. The bugs stem from an insufficient validation of an NVRAM variable called "DataSize" in three different drivers ReadyBootDxe, SystemLoadDefaultDxe, and SystemBootManagerDxe, resulting in a buffer overflow that could be weaponized to achieve code execution.
New Lenovo UEFI Firmware Vulnerabilities Affect Millions of Laptops

New Lenovo UEFI Firmware Vulnerabilities Affect Millions of Laptops

Apr 19, 2022
Three high-impact Unified Extensible Firmware Interface (UEFI) security vulnerabilities have been discovered impacting various Lenovo consumer laptop models, enabling malicious actors to deploy and execute firmware implants on the affected devices. Tracked as CVE-2021-3970, CVE-2021-3971, and CVE-2021-3972, the latter two "affect firmware drivers originally meant to be used only during the manufacturing process of Lenovo consumer notebooks," ESET researcher Martin Smolár  said  in a report published today. "Unfortunately, they were mistakenly included also in the production BIOS images without being properly deactivated," Smolár added. Successful exploitation of the flaws could permit an attacker to disable SPI flash protections or Secure Boot, effectively granting the adversary the ability to install persistent malware that can survive system reboots. CVE-2021-3970, on the other hand, relates to a case of memory corruption in the System Management Mode ( SMM
New 16 High-Severity UEFI Firmware Flaws Discovered in Millions of HP Devices

New 16 High-Severity UEFI Firmware Flaws Discovered in Millions of HP Devices

Mar 08, 2022
Cybersecurity researchers on Tuesday disclosed 16 new high-severity vulnerabilities in various implementations of Unified Extensible Firmware Interface (UEFI) firmware impacting multiple HP enterprise devices. The  shortcomings , which have CVSS scores ranging from 7.5 to 8.8, have been uncovered in HP's UEFI firmware. The variety of devices affected includes HP's laptops, desktops, point-of-sale (PoS) systems, and edge computing nodes. "By exploiting the vulnerabilities disclosed, attackers can leverage them to perform privileged code execution in firmware, below the operating system, and potentially deliver persistent malicious code that survives operating system re-installations and allows the bypass of endpoint security solutions (EDR/AV), Secure Boot and Virtualization-Based Security isolation," American firmware security company Binarly said in a report shared with The Hacker News. The most severe of the flaws concern a number of memory corruption vulnera
Dozens of Security Flaws Discovered in UEFI Firmware Used by Several Vendors

Dozens of Security Flaws Discovered in UEFI Firmware Used by Several Vendors

Feb 02, 2022
As many as 23 new high severity security vulnerabilities have been disclosed in different implementations of Unified Extensible Firmware Interface ( UEFI ) firmware used by numerous vendors, including Bull Atos, Fujitsu, HP, Juniper Networks, Lenovo, among others. The vulnerabilities reside in Insyde Software's InsydeH2O UEFI firmware, according to enterprise firmware security company  Binarly , with a majority of the anomalies diagnosed in the System Management Mode ( SMM ). UEFI is a software specification that provides a standard programming interface connecting a computer's firmware to its operating system during the booting process. In x86 systems, the UEFI firmware is usually stored in the flash memory chip of the motherboard. "By exploiting these vulnerabilities, attackers can successfully install malware that survives operating system re-installations and allows the bypass of endpoint security solutions (EDR/AV),  Secure Boot , and Virtualization-Based Securit
Chinese Hackers Spotted Using New UEFI Firmware Implant in Targeted Attacks

Chinese Hackers Spotted Using New UEFI Firmware Implant in Targeted Attacks

Jan 21, 2022
A previously undocumented firmware implant deployed to maintain stealthy persistence as part of a targeted espionage campaign has been linked to the Chinese-speaking Winnti advanced persistent threat group ( APT41 ). Kaspersky, which codenamed the rootkit  MoonBounce ,  characterized  the malware as the "most advanced  UEFI  firmware implant discovered in the wild to date," adding "the purpose of the implant is to facilitate the deployment of user-mode malware that stages execution of further payloads downloaded from the internet." Firmware-based rootkits, once a rarity in the threat landscape, are fast becoming lucrative tools among sophisticated actors to help achieve long standing foothold in a manner that's not only hard to detect, but also difficult to remove. The first firmware-level rootkit — dubbed  LoJax  — was discovered in the wild in 2018. Since then, three different instances of UEFI malware have been unearthed so far, including  MosaicRegresso
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