| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| An issue was discovered in Xen through 4.12.x allowing x86 PV guest OS users to cause a denial of service via degenerate chains of linear pagetables, because of an incorrect fix for CVE-2017-15595. "Linear pagetables" is a technique which involves either pointing a pagetable at itself, or to another pagetable of the same or higher level. Xen has limited support for linear pagetables: A page may either point to itself, or point to another pagetable of the same level (i.e., L2 to L2, L3 to L3, and so on). XSA-240 introduced an additional restriction that limited the "depth" of such chains by allowing pages to either *point to* other pages of the same level, or *be pointed to* by other pages of the same level, but not both. To implement this, we keep track of the number of outstanding times a page points to or is pointed to another page table, to prevent both from happening at the same time. Unfortunately, the original commit introducing this reset this count when resuming validation of a partially-validated pagetable, incorrectly dropping some "linear_pt_entry" counts. If an attacker could engineer such a situation to occur, they might be able to make loops or other arbitrary chains of linear pagetables, as described in XSA-240. A malicious or buggy PV guest may cause the hypervisor to crash, resulting in Denial of Service (DoS) affecting the entire host. Privilege escalation and information leaks cannot be excluded. All versions of Xen are vulnerable. Only x86 systems are affected. Arm systems are not affected. Only x86 PV guests can leverage the vulnerability. x86 HVM and PVH guests cannot leverage the vulnerability. Only systems which have enabled linear pagetables are vulnerable. Systems which have disabled linear pagetables, either by selecting CONFIG_PV_LINEAR_PT=n when building the hypervisor, or adding pv-linear-pt=false on the command-line, are not vulnerable. |
| An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering data-structure access during pagetable-height updates. When running on AMD systems with an IOMMU, Xen attempted to dynamically adapt the number of levels of pagetables (the pagetable height) in the IOMMU according to the guest's address space size. The code to select and update the height had several bugs. Notably, the update was done without taking a lock which is necessary for safe operation. A malicious guest administrator can cause Xen to access data structures while they are being modified, causing Xen to crash. Privilege escalation is thought to be very difficult but cannot be ruled out. Additionally, there is a potential memory leak of 4kb per guest boot, under memory pressure. Only Xen on AMD CPUs is vulnerable. Xen running on Intel CPUs is not vulnerable. ARM systems are not vulnerable. Only systems where guests are given direct access to physical devices are vulnerable. Systems which do not use PCI pass-through are not vulnerable. Only HVM guests can exploit the vulnerability. PV and PVH guests cannot. All versions of Xen with IOMMU support are vulnerable. |
| class.upload.php in verot.net class.upload before 1.0.3 and 2.x before 2.0.4, as used in the K2 extension for Joomla! and other products, omits .phar from the set of dangerous file extensions. |
| A misconfiguration in the debug interface in Mercedes-Benz HERMES 2.1 allows an attacker with direct physical access to device hardware to obtain cellular modem information. |
| An authentication bypass in the debug interface in Mercedes-Benz HERMES 2.1 allows an attacker with physical access to device hardware to obtain system information. |
| A misconfiguration in the debug interface in Mercedes-Benz HERMES 1.5 allows an attacker with direct physical access to device hardware to obtain cellular modem information. |
| An authentication bypass in the debug interface in Mercedes-Benz HERMES 1.5 allows an attacker with physical access to device hardware to obtain system information. |
| A misconfiguration in the debug interface in Mercedes-Benz HERMES 1 allows an attacker with direct physical access to device hardware to obtain cellular modem information. |
| An authentication bypass in the debug interface in Mercedes-Benz HERMES 1 allows an attacker with physical access to device hardware to obtain system information. |
| read_textobject in read.c in Xfig fig2dev 3.2.7b has a stack-based buffer overflow because of an incorrect sscanf. |
| In Wireshark 3.0.0 to 3.0.6 and 2.6.0 to 2.6.12, the CMS dissector could crash. This was addressed in epan/dissectors/asn1/cms/packet-cms-template.c by ensuring that an object identifier is set to NULL after a ContentInfo dissection. |
| In userman 13.0.76.43 through 15.0.20 in Sangoma FreePBX, XSS exists in the user management screen of the Administrator web site, i.e., the/admin/config.php?display=userman URI. An attacker with sufficient privileges can edit the Display Name of a user and embed malicious XSS code. When another user (such as an admin) visits the main User Management screen, the XSS payload will render and execute in the context of the victim user's account. |
| In userman 13.0.76.43 through 15.0.20 in Sangoma FreePBX, XSS exists in the User Management screen of the Administrator web site. An attacker with access to the User Control Panel application can submit malicious values in some of the time/date formatting and time-zone fields. These fields are not being properly sanitized. If this is done and a user (such as an admin) visits the User Management screen and views that user's profile, the XSS payload will render and execute in the context of the victim user's account. |
| Remote Authentication Bypass in Senior Rubiweb 6.2.34.28 and 6.2.34.37 allows admin access to sensitive information of affected users using vulnerable versions. The attacker only needs to provide the correct URL. |
| Norton Power Eraser, prior to 5.3.0.67, may be susceptible to a privilege escalation vulnerability, which is a type of issue whereby an attacker may attempt to compromise the software application to gain elevated access to resources that are normally protected from an application or user. |
| Symantec Endpoint Detection and Response (SEDR), prior to 4.3.0, may be susceptible to a cross site scripting (XSS) issue. XSS is a type of issue that can enable attackers to inject client-side scripts into web pages viewed by other users. An XSS vulnerability may be used by attackers to potentially bypass access controls such as the same-origin policy. |
| Norton Password Manager, prior to 6.6.2.5, may be susceptible to an information disclosure issue, which is a type of vulnerability whereby there is an unintentional disclosure of information to an actor that is not explicitly authorized to have access to that information. |
| Norton Password Manager, prior to 6.6.2.5, may be susceptible to a cross origin resource sharing (CORS) vulnerability, which is a type of issue that allows restricted resources on a web page to be requested from another domain outside the domain from which the first resource was served. |
| CA Automic Dollar Universe 5.3.3 contains a vulnerability, related to the uxdqmsrv binary being setuid root, that allows local attackers to elevate privileges. This vulnerability was reported to CA several years after CA Automic Dollar Universe 5.3.3 reached End of Life (EOL) status on April 1, 2015. |
| In the Linux kernel before 5.1.6, there is a use-after-free in serial_ir_init_module() in drivers/media/rc/serial_ir.c. |
