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A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system.

🗓️ 31 Aug 2022 07:00:00Reported by MicrosoftType 
mscve
 mscve🔗 msrc.microsoft.com👁 1 Views

glibc getcwd off-by-one error when buffer is 1; attacker in setuid program can escalate privileges.

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microsoftcm1_glibc_2.28-24Range<2.28-24

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31 Aug 2022 07:00Current
7.3High risk
Vulners AI Score7.3
CVSS 3.17.8
EPSS0.00848
SSVC
glibcgetcwdoff by onebuffer overflowbuffer underflowlocal attackerprivilege escalation
1