Security Vulnerabilities - CVEs Published In April 2023
The Linux kernel allows userspace processes to enable mitigations by calling prctl with PR_SET_SPECULATION_CTRL which disables the speculation feature as well as by using seccomp. We had noticed that on VMs of at least one major cloud provider, the kernel still left the victim process exposed to attacks in some cases even after enabling the spectre-BTI mitigation with prctl. The same behavior can be observed on a bare-metal machine when forcing the mitigation to IBRS on boot command line.
This happened because when plain IBRS was enabled (not enhanced IBRS), the kernel had some logic that determined that STIBP was not needed. The IBRS bit implicitly protects against cross-thread branch target injection. However, with legacy IBRS, the IBRS bit was cleared on returning to userspace, due to performance reasons, which disabled the implicit STIBP and left userspace threads vulnerable to cross-thread branch target injection against which STIBP protects.
CVSS Score
5.6
EPSS Score
0.0
Published
2023-04-21
SQL injection vulnerability found in Piwigo v.13.5.0 and before allows a remote attacker to execute arbitrary code via the filter_user_id parameter to the admin.php?page=history&filter_image_id=&filter_user_id endpoint.
CVSS Score
8.8
EPSS Score
0.372
Published
2023-04-21
H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the UpdateSnat interface at /goform/aspForm.
CVSS Score
4.9
EPSS Score
0.001
Published
2023-04-21
H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the Edit_BasicSSID interface at /goform/aspForm.
CVSS Score
4.9
EPSS Score
0.001
Published
2023-04-21
H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the Edit_BasicSSID_5G interface at /goform/aspForm.
CVSS Score
4.9
EPSS Score
0.001
Published
2023-04-21
H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the SetMobileAPInfoById interface at /goform/aspForm.
CVSS Score
4.9
EPSS Score
0.001
Published
2023-04-21
H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the AddWlanMacList interface at /goform/aspForm.
CVSS Score
4.9
EPSS Score
0.001
Published
2023-04-21
H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the UpdateMacClone interface at /goform/aspForm.
CVSS Score
4.9
EPSS Score
0.001
Published
2023-04-21
H3C Magic R200 version R200V100R004 was discovered to contain a stack overflow via the AddMacList interface at /goform/aspForm.
CVSS Score
4.9
EPSS Score
0.001
Published
2023-04-21
H3C Magic R200 R200V100R004 was discovered to contain a stack overflow via the DelvsList interface at /goform/aspForm.
CVSS Score
4.9
EPSS Score
0.001
Published
2023-04-21