CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 0CVE-2021-28704
https://notcve.org/view.php?id=CVE-2021-28704
PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. • https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7ZGWVVRI4XY2XSTBI3XEMWBXPDVX6OT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXUI4VMD52CH3T7YXAG3J2JW7ZNN3SXF https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2021/dsa-5017 https://xenbits.xenproject.org/xsa/advisory-388.txt •
CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 0CVE-2021-28707
https://notcve.org/view.php?id=CVE-2021-28707
PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. • https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7ZGWVVRI4XY2XSTBI3XEMWBXPDVX6OT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXUI4VMD52CH3T7YXAG3J2JW7ZNN3SXF https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2021/dsa-5017 https://xenbits.xenproject.org/xsa/advisory-388.txt •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2021-28709
https://notcve.org/view.php?id=CVE-2021-28709
issues with partially successful P2M updates on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). In some cases the hypervisor carries out the requests by splitting them into smaller chunks. Error handling in certain PoD cases has been insufficient in that in particular partial success of some operations was not properly accounted for. • https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7ZGWVVRI4XY2XSTBI3XEMWBXPDVX6OT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXUI4VMD52CH3T7YXAG3J2JW7ZNN3SXF https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2021/dsa-5017 https://xenbits.xenproject.org/xsa/advisory-389.txt • CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 0CVE-2021-28708
https://notcve.org/view.php?id=CVE-2021-28708
PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. Guests are permitted to control certain P2M aspects of individual pages via hypercalls. These hypercalls may act on ranges of pages specified via page orders (resulting in a power-of-2 number of pages). The implementation of some of these hypercalls for PoD does not enforce the base page frame number to be suitably aligned for the specified order, yet some code involved in PoD handling actually makes such an assumption. These operations are XENMEM_decrease_reservation (CVE-2021-28704) and XENMEM_populate_physmap (CVE-2021-28707), the latter usable only by domains controlling the guest, i.e. a de-privileged qemu or a stub domain. • https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7ZGWVVRI4XY2XSTBI3XEMWBXPDVX6OT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXUI4VMD52CH3T7YXAG3J2JW7ZNN3SXF https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2021/dsa-5017 https://xenbits.xenproject.org/xsa/advisory-388.txt •
CVSS: 8.8EPSS: 2%CPEs: 4EXPL: 1CVE-2021-38003 – Google Chromium V8 Memory Corruption Vulnerability
https://notcve.org/view.php?id=CVE-2021-38003
Inappropriate implementation in V8 in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Una implementación inapropiada de V8 en Google Chrome versiones anteriores a 95.0.4638.69, permitía a un atacante remoto explotar potencialmente la corrupción de la pila por medio de una página HTML diseñada Google Chromium V8 Engine has a bug in JSON.stringify, where the internal TheHole value can leak to script code, causing memory corruption. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera. • https://github.com/SpiralBL0CK/Chrome-V8-RCE-CVE-2021-38003 https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html https://crbug.com/1263462 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744 https://www.debian.org/security/2022/dsa-5046 • CWE-755: Improper Handling of Exceptional Conditions •