Defending against Heap Overflow by Using Randomization in Nested Virtual Clusters Chee Meng Tey and Debin Gao Singapore Management University, Singapore {cmtey.2008,dbgao}@smu.edu.sg Heap based buffer overflows are a dangerous class of vulnerability. One counter- measure is randomizing the location...
CVE-2023-27997 is a heap-based buffer overflow vulnerability in the secure socket layer virtual private network (SSL VPN) functionality in FortiOS and FortiProxy in Fortinet devices including its FortiGate Next Generation Firewalls (NGFW). An unauthenticated, remote attacker could ...
Consequently, if we execute “sudoedit -s”, then we set both MODE_EDIT and MODE_SHELL (but not MODE_RUN), we avoid the escape code, reach the vulnerable code, and overflow the heap-based buffer “user_args” through a command-line argument that ends with a ...
The heap buffer overflow gives us the ability to conduct a fastbin dup attack. “Fastbin dup” is a type of attack that corrupts the state of the heap so that a subsequent call tomallocreturns a chosen address. Oncemallochas returned a chosen address, we can write arbitrary data to that ...
PSIRT Blogs Analysis of FG-IR-22-398 – FortiOS - heap-based buffer overflow in SSLVPNdBy Carl Windsor, Guillaume Lovet, Hongkei Chan, and Alex Kong | January 11, 2023 Affected Platforms: FortiOS Impacted Users: Government & large organizations Impact: Data loss and OS and...
The heap-based buffer overflow vulnerability CVE-2021-44708 exists in Adobe Acrobat Pro DC’s third-party library Solid Framework, which is located in the directory C:\Program Files (x86)\Adobe\Acrobat DC\Acrobat\plug_ins\SaveAsNonPDF\Solid. Figure 1 shows a comparison between a ...
Heap-based buffer overflow in the mch_expand_wildcards function in os_unix.c in Vim 6.2 and 6.3 allows user-assisted attackers to execute arbitrary code via shell metacharacters in filenames, as demonstrated by the netrw.v3 test case. ...
A heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiGate versions 5.6.12, 6.0.10, 6.2.4 and 6.4.1 and earlier may allow a remote attacker with valid SSL VPN credentials to crash the SSL VPN daemon by sending a large LCP packet, when tunnel...
Heap sprays are a new buffer overflow attack (BOA) form that can significantly increase the successful chance of a BOA even though the attacked process is protected by a lot of state-of-the-art anti-BOA mechanisms, such as ASLR, non-executable stack/DEP, signature-based IDSes, and type-...
Hello Team Nessus has reported vulnerability. Curl 7.69 < 8.4.0 Heap Buffer Overflow and Curl 7.84 <= 8.2.1 Header DoS (CVE-2023-38039) for 2016,2019,2022 Please let me know how to fix this issue ASAP