An issue was discovered in the function mark_beginning_as_normal in nfa.c in flex 2.6.4. There is a stack exhaustion problem caused by the mark_beginning_as_normal function making recursive calls to itself in certain scenarios involving lots of '*' characters. Remote attackers could leverage this vulnerability to cause a denial-of-service.

...

AZL-6424 CVE-2019-6293 affecting package flex for versions less than 2.6.4-7

An issue was discovered in the function markbeginningasnormal in nfa.c in flex 2.6.4. There is a stack exhaustion problem caused by the markbeginningasnormal function making recursive calls to itself in certain scenarios involving lots of '' characters. Remote attackers could leverage this...

DEBIAN-CVE-2019-6293

An issue was discovered in the function markbeginningasnormal in nfa.c in flex 2.6.4. There is a stack exhaustion problem caused by the markbeginningasnormal function making recursive calls to itself in certain scenarios involving lots of '' characters. Remote attackers could leverage this...

PT-2019-18080 · Gnu +1 · Flex +1

Name of the Vulnerable Software and Affected Versions: flex version 2.6.4 Description: The issue is caused by the mark beginning as normal function making recursive calls to itself in certain scenarios involving lots of '' characters, leading to a stack exhaustion problem. Remote attackers could...