Vulnerabilites related to westes - flex
CVE-2019-6293 (GCVE-0-2019-6293)
Vulnerability from cvelistv5
Published
2019-01-15 00:00
Modified
2024-09-16 22:30
Severity ?
CWE
  • n/a
Summary
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.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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CVE-2006-0459 (GCVE-0-2006-0459)
Vulnerability from cvelistv5
Published
2006-03-29 23:00
Modified
2024-08-07 16:34
Severity ?
CWE
  • n/a
Summary
flex.skl in Will Estes and John Millaway Fast Lexical Analyzer Generator (flex) before 2.5.33 does not allocate enough memory for grammars containing (1) REJECT statements or (2) trailing context rules, which causes flex to generate code that contains a buffer overflow that might allow context-dependent attackers to execute arbitrary code.
References
http://prdownloads.sourceforge.net/flex/flex-2.5.33.tar.bz2?download x_refsource_CONFIRM
http://www.osvdb.org/23440 vdb-entry, x_refsource_OSVDB
http://www.us.debian.org/security/2006/dsa-1020 vendor-advisory, x_refsource_DEBIAN
http://www.vupen.com/english/advisories/2006/0770 vdb-entry, x_refsource_VUPEN
http://secunia.com/advisories/19071 third-party-advisory, x_refsource_SECUNIA
http://www.securityfocus.com/bid/16896 vdb-entry, x_refsource_BID
https://exchange.xforce.ibmcloud.com/vulnerabilities/24995 vdb-entry, x_refsource_XF
http://www.gentoo.org/security/en/glsa/glsa-200603-07.xml vendor-advisory, x_refsource_GENTOO
http://secunia.com/advisories/19228 third-party-advisory, x_refsource_SECUNIA
http://secunia.com/advisories/19424 third-party-advisory, x_refsource_SECUNIA
http://securityreason.com/securityalert/570 third-party-advisory, x_refsource_SREASON
http://secunia.com/advisories/19126 third-party-advisory, x_refsource_SECUNIA
https://usn.ubuntu.com/260-1/ vendor-advisory, x_refsource_UBUNTU
http://sourceforge.net/mailarchive/forum.php?thread_name=20060223020346.GA11231%40tabitha.home.tldz.org&forum_name=flex-announce mailing-list, x_refsource_MLIST
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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CVE-2016-6354 (GCVE-0-2016-6354)
Vulnerability from cvelistv5
Published
2016-09-21 14:00
Modified
2024-08-06 01:29
Severity ?
CWE
  • n/a
Summary
Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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Vulnerability from fkie_nvd
Published
2006-03-29 23:02
Modified
2025-04-03 01:03
Severity ?
Summary
flex.skl in Will Estes and John Millaway Fast Lexical Analyzer Generator (flex) before 2.5.33 does not allocate enough memory for grammars containing (1) REJECT statements or (2) trailing context rules, which causes flex to generate code that contains a buffer overflow that might allow context-dependent attackers to execute arbitrary code.
References
secalert@redhat.comhttp://prdownloads.sourceforge.net/flex/flex-2.5.33.tar.bz2?downloadProduct
secalert@redhat.comhttp://secunia.com/advisories/19071Patch, Vendor Advisory
secalert@redhat.comhttp://secunia.com/advisories/19126Vendor Advisory
secalert@redhat.comhttp://secunia.com/advisories/19228Vendor Advisory
secalert@redhat.comhttp://secunia.com/advisories/19424Patch, Vendor Advisory
secalert@redhat.comhttp://securityreason.com/securityalert/570Third Party Advisory
secalert@redhat.comhttp://sourceforge.net/mailarchive/forum.php?thread_name=20060223020346.GA11231%40tabitha.home.tldz.org&forum_name=flex-announceRelease Notes
secalert@redhat.comhttp://www.gentoo.org/security/en/glsa/glsa-200603-07.xmlThird Party Advisory
secalert@redhat.comhttp://www.osvdb.org/23440Broken Link, Patch
secalert@redhat.comhttp://www.securityfocus.com/bid/16896Patch, Third Party Advisory, VDB Entry
secalert@redhat.comhttp://www.us.debian.org/security/2006/dsa-1020Patch, Vendor Advisory
secalert@redhat.comhttp://www.vupen.com/english/advisories/2006/0770Broken Link, URL Repurposed
secalert@redhat.comhttps://exchange.xforce.ibmcloud.com/vulnerabilities/24995VDB Entry
secalert@redhat.comhttps://usn.ubuntu.com/260-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://prdownloads.sourceforge.net/flex/flex-2.5.33.tar.bz2?downloadProduct
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/19071Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/19126Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/19228Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/19424Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://securityreason.com/securityalert/570Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://sourceforge.net/mailarchive/forum.php?thread_name=20060223020346.GA11231%40tabitha.home.tldz.org&forum_name=flex-announceRelease Notes
af854a3a-2127-422b-91ae-364da2661108http://www.gentoo.org/security/en/glsa/glsa-200603-07.xmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.osvdb.org/23440Broken Link, Patch
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/16896Patch, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.us.debian.org/security/2006/dsa-1020Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2006/0770Broken Link, URL Repurposed
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/24995VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/260-1/Third Party Advisory
Impacted products
Vendor Product Version
westes flex *


To clipboard 

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Vulnerability from fkie_nvd
Published
2019-01-15 00:29
Modified
2024-11-21 04:46
Severity ?
5.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Summary
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.
References
cve@mitre.orghttps://github.com/westes/flex/issues/414Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/westes/flex/issues/414Exploit, Third Party Advisory
Impacted products
Vendor Product Version
westes flex 2.6.4


To clipboard 

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Vulnerability from fkie_nvd
Published
2016-09-21 14:25
Modified
2025-04-12 10:46
Severity ?
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read.
References
cve@mitre.orghttp://www.debian.org/security/2016/dsa-3653Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2016/07/18/8Release Notes, Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2016/07/26/12Release Notes, Third Party Advisory
cve@mitre.orghttps://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466Patch
cve@mitre.orghttps://security.gentoo.org/glsa/201701-31
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3653Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/07/18/8Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/07/26/12Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466Patch
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201701-31
Impacted products
Vendor Product Version
debian debian_linux 8.0
westes flex *


To clipboard 

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      "url": "http://www.openwall.com/lists/oss-security/2016/07/26/12"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/201701-31"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}