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    CVE-2003-0542

    Multiple stack-based buffer overflows in (1) mod_alias and (2) mod_rewrite for Apache before 1.3.29 allow attackers to create configuration files to cause a denial of service (crash) or execute arbitrary code via a regular expression with more than 9 captures.

    Published:Oct 29, 2003
    Last Modified:Apr 16, 2026
    EPS:Oct 30, 2003
    EPSS Score:0.00523
    CVSS Score:7.2

    Affected Products

    Vendor
    Apache
    Product
    Http Server
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Linux
    Vendor
    Redhat
    Product
    Rhel Stronghold
    Vendor
    Redhat
    Product
    Stronghold

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-48913 (CVSS 7.3) — Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. …
    CVE-2026-42536 (CVSS 7.5) — Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted…
    CVE-2026-44185 (CVSS 7.3) — Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled OCSP…
    CVE-2026-34355 (CVSS 7.5) — A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted …
    CVE-2026-44631 (CVSS 9.8) — Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. Th…
    CVE-2026-44119 (CVSS 5.5) — Improper Privilege Management vulnerability in Apache HTTP Server 2.4.67 and earlier allows local .htaccess au…
    CVE-2026-43951 (CVSS 6.5) — Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response lan…
    CVE-2026-42535 (CVSS 9.1) — A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to directly ma…
    CVE-2026-34356 (CVSS 7.5) — Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassRev…
    CVE-2026-44186 (CVSS 7.3) — Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in the mod_proxy_ftp module in Apache HTT…

    References

    ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2004.6/SCOSA-2004.6.txt
    ftp://patches.sgi.com/support/free/security/advisories/20031203-01-U.asc
    ftp://patches.sgi.com/support/free/security/advisories/20040202-01-U.asc
    http://docs.info.apple.com/article.html?artnum=61798
    http://httpd.apache.org/dist/httpd/Announcement2.html
    http://lists.apple.com/archives/security-announce/2004/Jan/msg00000.html
    http://lists.apple.com/mhonarc/security-announce/msg00045.html
    http://marc.info/?l=bugtraq&m=106761802305141&w=2
    http://marc.info/?l=bugtraq&m=130497311408250&w=2
    http://secunia.com/advisories/10096
    http://secunia.com/advisories/10098
    http://secunia.com/advisories/10102
    http://secunia.com/advisories/10112
    http://secunia.com/advisories/10114
    http://secunia.com/advisories/10153
    http://secunia.com/advisories/10260
    http://secunia.com/advisories/10264
    http://secunia.com/advisories/10463
    http://secunia.com/advisories/10580
    http://secunia.com/advisories/10593
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-101444-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-101841-1
    http://www.kb.cert.org/vuls/id/434566
    http://www.kb.cert.org/vuls/id/549142
    http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2003:103
    http://www.redhat.com/support/errata/RHSA-2003-320.html
    http://www.redhat.com/support/errata/RHSA-2003-360.html
    http://www.redhat.com/support/errata/RHSA-2003-405.html
    http://www.redhat.com/support/errata/RHSA-2004-015.html
    http://www.redhat.com/support/errata/RHSA-2005-816.html
    http://www.securityfocus.com/advisories/6079
    http://www.securityfocus.com/archive/1/342674
    http://www.securityfocus.com/bid/8911
    http://www.securityfocus.com/bid/9504
    https://exchange.xforce.ibmcloud.com/vulnerabilities/13400
    https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r5001ecf3d6b2bdd0b732e527654248abb264f08390045d30709a92f6%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r5419c9ba0951ef73a655362403d12bb8d10fab38274deb3f005816f5%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r7035b7c9091c4b665a3b7205364775410646f12125d48e74e395f2ce%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/raa117ef183f0da9b3f46efbeaa66f7622bd68868a450cae4fd8ed594%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/re028d61fe612b0908595d658b9b39e74bca56f2a1ed3c5f06b5ab571%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rf2f0f3611f937cf6cfb3b4fe4a67f69885855126110e1e3f2fb2728e%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3799
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A863
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A864
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9458
    ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2004.6/SCOSA-2004.6.txt
    ftp://patches.sgi.com/support/free/security/advisories/20031203-01-U.asc
    ftp://patches.sgi.com/support/free/security/advisories/20040202-01-U.asc
    http://docs.info.apple.com/article.html?artnum=61798
    http://httpd.apache.org/dist/httpd/Announcement2.html
    http://lists.apple.com/archives/security-announce/2004/Jan/msg00000.html
    http://lists.apple.com/mhonarc/security-announce/msg00045.html
    http://marc.info/?l=bugtraq&m=106761802305141&w=2
    http://marc.info/?l=bugtraq&m=130497311408250&w=2
    http://secunia.com/advisories/10096
    http://secunia.com/advisories/10098
    http://secunia.com/advisories/10102
    http://secunia.com/advisories/10112
    http://secunia.com/advisories/10114
    http://secunia.com/advisories/10153
    http://secunia.com/advisories/10260
    http://secunia.com/advisories/10264
    http://secunia.com/advisories/10463
    http://secunia.com/advisories/10580
    http://secunia.com/advisories/10593
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-101444-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-101841-1
    http://www.kb.cert.org/vuls/id/434566
    http://www.kb.cert.org/vuls/id/549142
    http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2003:103
    http://www.redhat.com/support/errata/RHSA-2003-320.html
    http://www.redhat.com/support/errata/RHSA-2003-360.html
    http://www.redhat.com/support/errata/RHSA-2003-405.html
    http://www.redhat.com/support/errata/RHSA-2004-015.html
    http://www.redhat.com/support/errata/RHSA-2005-816.html
    http://www.securityfocus.com/advisories/6079
    http://www.securityfocus.com/archive/1/342674
    http://www.securityfocus.com/bid/8911
    http://www.securityfocus.com/bid/9504
    https://exchange.xforce.ibmcloud.com/vulnerabilities/13400
    https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r5001ecf3d6b2bdd0b732e527654248abb264f08390045d30709a92f6%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r5419c9ba0951ef73a655362403d12bb8d10fab38274deb3f005816f5%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r7035b7c9091c4b665a3b7205364775410646f12125d48e74e395f2ce%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/raa117ef183f0da9b3f46efbeaa66f7622bd68868a450cae4fd8ed594%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/re028d61fe612b0908595d658b9b39e74bca56f2a1ed3c5f06b5ab571%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rf2f0f3611f937cf6cfb3b4fe4a67f69885855126110e1e3f2fb2728e%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3799
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A863
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A864
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9458

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High