CVE-2006-0459
published 2006-03-29CVE-2006-0459: 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)…
PriorityP337high7.5CVSS 2.0
AVNACLAuNCPIPAP
EPSS
4.77%
90.9th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| adobe | flex | >= 0 < 2.5.33-1 | 2.5.33-1 |
| adobe | flex | >= 0 < 2.5.33-1 | 2.5.33-1 |
| adobe | flex | >= 0 < 2.5.33-1 | 2.5.33-1 |
| adobe | flex | >= 0 < 2.5.33-1 | 2.5.33-1 |
| debian | flex | < flex 2.5.33-1 (bookworm) | flex 2.5.33-1 (bookworm) |
| westes | flex | <= 2.5.32 | — |
CVSS provenance
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv7.5HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
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GHSA
GHSA-c6v8-67cp-6v4p: flex
ghsa_unreviewed·2022-05-01
CVE-2006-0459 [HIGH] CWE-119 GHSA-c6v8-67cp-6v4p: flex
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.
OSV
CVE-2006-0459: flex
osv·2006-03-29·CVSS 7.5
CVE-2006-0459 [HIGH] CVE-2006-0459: flex
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.
Red Hat
Multiple Wireshark issues (CVE-2007-0457, CVE-2007-0458, CVE-2007-0459)
vendor_redhat·2007-02-01·CVSS 5.0
CVE-2007-0458 [MEDIUM] Multiple Wireshark issues (CVE-2007-0457, CVE-2007-0458, CVE-2007-0459)
Multiple Wireshark issues (CVE-2007-0457, CVE-2007-0458, CVE-2007-0459)
Unspecified vulnerability in the HTTP dissector in Wireshark (formerly Ethereal) 0.99.3 and 0.99.4 allows remote attackers to cause a denial of service (application crash) via unspecified vectors, a different issue than CVE-2006-5468.
Ubuntu
flex vulnerability
vendor_ubuntu·2006-03-07
CVE-2006-0459 flex vulnerability
Title: flex vulnerability
Summary: flex vulnerability
Chris Moore discovered a buffer overflow in a particular class of
lexicographical scanners generated by flex. This could be exploited to
execute arbitrary code by processing specially crafted user-defined
input to an application that uses a flex scanner for parsing.
This flaw particularly affects gpc, the GNU Pascal Compiler. A
potentially remote attacker could exploit this by tricking an user or
automated system into compiling a specially crafted Pascal source code
file.
Please note that gpc is not officially supported in Ubuntu (it is in
the 'universe' component of the archive). However, this affects you if
you use a customized version built from the gcc-3.3 or gcc-3.4 source
package (which is supported).
Instructions: In general
Debian
CVE-2006-0459: flex - flex.skl in Will Estes and John Millaway Fast Lexical Analyzer Generator (flex) ...
vendor_debian·2006·CVSS 7.5
CVE-2006-0459 [HIGH] CVE-2006-0459: flex - flex.skl in Will Estes and John Millaway Fast Lexical Analyzer Generator (flex) ...
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.
Scope: local
bookworm: resolved (fixed in 2.5.33-1)
bullseye: resolved (fixed in 2.5.33-1)
forky: resolved (fixed in 2.5.33-1)
sid: resolved (fixed in 2.5.33-1)
trixie: resolved (fixed in 2.5.33-1)
Red Hat
CVE-2006-0459: flex
vendor_redhat·CVSS 7.5
CVE-2006-0459 [HIGH] CVE-2006-0459: flex
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.
Statement: This issue only affects parsers which are generated by grammars which either use REJECT or rules with a variable trailing context (in these rules the parser has to keep all backtracking paths). The Red Hat Security Response Team analysed all packages that include flex generated parsers in Red Hat Enterprise Linux (2.1, 3, and 4) and found none were vulnerable.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://prdownloads.sourceforge.net/flex/flex-2.5.33.tar.bz2?downloadhttp://secunia.com/advisories/19071http://secunia.com/advisories/19126http://secunia.com/advisories/19228http://secunia.com/advisories/19424http://securityreason.com/securityalert/570http://sourceforge.net/mailarchive/forum.php?thread_name=20060223020346.GA11231%40tabitha.home.tldz.org&forum_name=flex-announcehttp://www.gentoo.org/security/en/glsa/glsa-200603-07.xmlhttp://www.osvdb.org/23440http://www.securityfocus.com/bid/16896http://www.us.debian.org/security/2006/dsa-1020http://www.vupen.com/english/advisories/2006/0770https://exchange.xforce.ibmcloud.com/vulnerabilities/24995https://usn.ubuntu.com/260-1/http://prdownloads.sourceforge.net/flex/flex-2.5.33.tar.bz2?downloadhttp://secunia.com/advisories/19071http://secunia.com/advisories/19126http://secunia.com/advisories/19228http://secunia.com/advisories/19424http://securityreason.com/securityalert/570http://sourceforge.net/mailarchive/forum.php?thread_name=20060223020346.GA11231%40tabitha.home.tldz.org&forum_name=flex-announcehttp://www.gentoo.org/security/en/glsa/glsa-200603-07.xmlhttp://www.osvdb.org/23440http://www.securityfocus.com/bid/16896http://www.us.debian.org/security/2006/dsa-1020http://www.vupen.com/english/advisories/2006/0770https://exchange.xforce.ibmcloud.com/vulnerabilities/24995https://usn.ubuntu.com/260-1/
2006-03-29
Published