CVSS: 8.8EPSS: 0%CPEs: 57EXPL: 1CVE-2021-25217 – A buffer overrun in lease file parsing code can be used to exploit a common vulnerability shared by dhcpd and dhclient
https://notcve.org/view.php?id=CVE-2021-25217
In ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16, ISC DHCP 4.4.0 -> 4.4.2 (Other branches of ISC DHCP (i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series) are beyond their End-of-Life (EOL) and no longer supported by ISC. From inspection it is clear that the defect is also present in releases from those series, but they have not been officially tested for the vulnerability), The outcome of encountering the defect while reading a lease that will trigger it varies, according to: the component being affected (i.e., dhclient or dhcpd) whether the package was built as a 32-bit or 64-bit binary whether the compiler flag -fstack-protection-strong was used when compiling In dhclient, ISC has not successfully reproduced the error on a 64-bit system. However, on a 32-bit system it is possible to cause dhclient to crash when reading an improper lease, which could cause network connectivity problems for an affected system due to the absence of a running DHCP client process. In dhcpd, when run in DHCPv4 or DHCPv6 mode: if the dhcpd server binary was built for a 32-bit architecture AND the -fstack-protection-strong flag was specified to the compiler, dhcpd may exit while parsing a lease file containing an objectionable lease, resulting in lack of service to clients. Additionally, the offending lease and the lease immediately following it in the lease database may be improperly deleted. if the dhcpd server binary was built for a 64-bit architecture OR if the -fstack-protection-strong compiler flag was NOT specified, the crash will not occur, but it is possible for the offending lease and the lease which immediately followed it to be improperly deleted. • http://www.openwall.com/lists/oss-security/2021/05/26/6 https://cert-portal.siemens.com/productcert/pdf/ssa-406691.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf https://kb.isc.org/docs/cve-2021-25217 https://lists.debian.org/debian-lts-announce/2021/06/msg00002.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5QI4DYC7J4BGHEW3NH4XHMWTHYC36UK4 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/ • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 1CVE-2021-30471
https://notcve.org/view.php?id=CVE-2021-30471
A flaw was found in PoDoFo 0.9.7. An uncontrolled recursive call in PdfNamesTree::AddToDictionary function in src/podofo/doc/PdfNamesTree.cpp can lead to a stack overflow. Se encontró un fallo en PoDoFo versión 0.9.7. Una llamada recursiva no controlada en la función PdfNamesTree::AddToDictionary en el archivo src/podofo/doc/PdfNamesTree.cpp puede conllevar a un desbordamiento de pila • https://bugzilla.redhat.com/show_bug.cgi?id=1947441 • CWE-674: Uncontrolled Recursion •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 1CVE-2021-30470
https://notcve.org/view.php?id=CVE-2021-30470
A flaw was found in PoDoFo 0.9.7. An uncontrolled recursive call among PdfTokenizer::ReadArray(), PdfTokenizer::GetNextVariant() and PdfTokenizer::ReadDataType() functions can lead to a stack overflow. Se encontró un fallo en PoDoFo versión 0.9.7. Una llamada recursiva no controlada entre las funciones PdfTokenizer::ReadArray(), PdfTokenizer::GetNextVariant() y PdfTokenizer::ReadDataType() puede conllevar a un desbordamiento de pila • https://bugzilla.redhat.com/show_bug.cgi?id=1947436 • CWE-674: Uncontrolled Recursion •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 1CVE-2021-30469
https://notcve.org/view.php?id=CVE-2021-30469
A flaw was found in PoDoFo 0.9.7. An use-after-free in PoDoFo::PdfVecObjects::Clear() function can cause a denial of service via a crafted PDF file. Se encontró un fallo en PoDoFo versión 0.9.7. Un uso de la memoria previamente liberada en la función PoDoFo::PdfVecObjects::Clear() puede causar una denegación de servicio por medio de un archivo PDF diseñado • https://bugzilla.redhat.com/show_bug.cgi?id=1947433 • CWE-416: Use After Free •
CVSS: 7.1EPSS: 0%CPEs: 4EXPL: 1CVE-2021-3561
https://notcve.org/view.php?id=CVE-2021-3561
An Out of Bounds flaw was found fig2dev version 3.2.8a. A flawed bounds check in read_objects() could allow an attacker to provide a crafted malicious input causing the application to either crash or in some cases cause memory corruption. The highest threat from this vulnerability is to integrity as well as system availability. Se encontró un fallo Fuera de Límites en fig2dev versión 3.2.8a. Una comprobación de límites fallida en la función read_objects() podría permitir a un atacante proporcionar una entrada maliciosa diseñada que haga a la aplicación bloquearse o, en algunos casos, causar una corrupción en la memoria. • https://bugzilla.redhat.com/show_bug.cgi?id=1955675 https://lists.debian.org/debian-lts-announce/2021/10/msg00002.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C44WSY5KAQXC3Y2NMSVXXZS3M5U5U2E6 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKMOIQX6GULVSYXLYW5JQY6KJNTWV3E4 https://sourceforge.net/p/mcj/fig2dev/ci/6827c09d2d6491cb2ae3ac7196439ff3aa791fd9 https://sourceforge.net/p/mcj/tickets/116 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •