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Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
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March 25, 2023Severity Medium Analysis Summary GandCrab – a ransomware-as-a-service variant – was discovered in early 2018. At least five versions of GandCrab have been created since its […]March 25, 2023Severity Medium Analysis Summary NjRat is a Remote Access Trojan, which is found leveraging Pastebin to deliver a second-stage payload after initial infection. There are multiple […]March 24, 2023Severity Medium Analysis Summary CVE-2023-20113 Cisco SD-WAN vManage Software is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
March 25, 2023Severity Medium Analysis Summary GandCrab – a ransomware-as-a-service variant – was discovered in early 2018. At least five versions of GandCrab have been created since its […]March 25, 2023Severity Medium Analysis Summary NjRat is a Remote Access Trojan, which is found leveraging Pastebin to deliver a second-stage payload after initial infection. There are multiple […]March 24, 2023Severity Medium Analysis Summary CVE-2023-20113 Cisco SD-WAN vManage Software is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Advisory – ICS – Mitsubishi Electric MELSEC and MELIPC Vulnerability
December 29, 2022Rewterz Threat Advisory – CVE-2022-46421 – Apache Airflow Hive Provider Vulnerability
December 29, 2022
Severity
High
Analysis Summary
CVE-2022-47939 CVSS:10
Linux Kernel could allow a remote attacker to execute arbitrary code on the system, caused by a use-after-free flaw in ksmbd in fs/ksmbd/smb2pdu.c. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVE-2022-47938 CVSS:4.3
Linux Kernel is vulnerable to a denial of service, caused by an out-of-bounds read flaw in ksmbd in fs/ksmbd/smb2misc.c. By sending a specially-crafted request, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.
CVE-2022-47946 CVSS:6.2
Linux Kernel is vulnerable to a denial of service, caused by a use-after-free flaw in the io_sqpoll_wait_sq function. By sending a specially-crafted request, a local attacker could exploit this vulnerability to cause the system crash.
CVE-2022-47943 CVSS:9.6
Linux Kernel could allow a remote authenticated attacker to obtain sensitive information, caused by an out-of-bounds read flaw in ksmbd when there is a large length in the zero DataOffset case. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain sensitive information or cause a denial of service condtion.
CVE-2022-47942 CVSS:8.5
Linux Kernel is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the set_ntacl_dacl function in ksmbd. By sending a specially-crafted request, a remote authenticated attacker could overflow a buffer and execute arbitrary code on the system.
CVE-2022-47941 CVSS:5.3
Linux Kernel is vulnerable to a denial of service, caused by a memory leak flaw in ksmbd in fs/ksmbd/smb2pdu.c. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVE-2022-47940 CVSS:8.1
Linux Kernel could allow a remote authenticated attacker to obtain sensitive information, caused by an out-of-bounds read flaw in ksmbd in fs/ksmbd/smb2pdu.c. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain sensitive information, and use this information to launch further attacks against the affected system.
Impact
- Denial of Service
- Information Disclosure
- Buffer Overflow
Indicators Of Compromise
CVE
- CVE-2022-47939
- CVE-2022-47938
- CVE-2022-47946
- CVE-2022-47943
- CVE-2022-47942
- CVE-2022-47941
- CVE-2022-47940
Affected Vendors
Linux
Affected Products
- Linux Kernel 5.10
- Linux Kernel 5.15
- Linux Kernel 5.18
- Linux Kernel 5.19
Remediation
Refer to Linux Kernel GIT Repository for patch, upgrade or suggested workaround information.