CVE-2004-0751
The char_buffer_read function in the mod_ssl module for Apache 2.x, when using reverse proxying to an SSL server, allows remote attackers to cause a denial of service (segmentation fault).
02 Description
The char_buffer_read function in the mod_ssl module for Apache 2.x, when using reverse proxying to an SSL server, allows remote attackers to cause a denial of service (segmentation fault).
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 72.30% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 99.3% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2004-09-10 04:00Z22 YR AGO
- Last updated
- 2024-08-08 00:31Z2 YR AGO
- Reserved
- 2004-07-26
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- No CWE assigned
- Data version
- 5.1
- Document digest
- e271ef5dcdcf9f4167013a8cc37ddeb023c39cd28daf6ac3dcb428e168d290d0
05 Affected products
06 References
- www.redhat.comRHSA-2004:463http://www.redhat.com/support/errata/RHSA-2004-463.html
- www.novell.comSUSE-SA:2004:030http://www.novell.com/linux/security/advisories/2004_30_apache2.html
- exchange.xforce.ibmcloud.comapache-modssl-speculative-dos(17273)https://exchange.xforce.ibmcloud.com/vulnerabilities/17273
- issues.apache.orghttp://issues.apache.org/bugzilla/show_bug.cgi?id=30134
- www.trustix.org2004-0047http://www.trustix.org/errata/2004/0047/
- www.mandrakesecure.netMDKSA-2004:096http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2004:096
- www.gentoo.orgGLSA-200409-21http://www.gentoo.org/security/en/glsa/glsa-200409-21.xml
- oval.cisecurity.orgoval:org.mitre.oval:def:11864https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11864
- archives.neohapsis.com20040911 Remote buffer overflow in Apache mod_ssl when reverse proxying SSLhttp://archives.neohapsis.com/archives/bugtraq/2004-09/0096.html
- lists.apache.org[httpd-cvs] 20190815 svn commit: r1048742 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20190815 svn commit: r1048743 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20200401 svn commit: r1058586 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20200401 svn commit: r1058587 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073139 [3/13] - in /websites/staging/httpd/trunk/content: ./ security/json/https://lists.apache.org/thread.html/re895fc1736d25c8cf57e102c871613b8aeec9ea26fd8a44e7942b5ab%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1888194 [3/13] - /httpd/site/trunk/content/security/json/https://lists.apache.org/thread.html/rd65d8ba68ba17e7deedafbf5bb4899f2ae4dad781d21b931c2941ac3%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073140 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073143 [2/3] - in /websites/staging/httpd/trunk/content: ./ security/https://lists.apache.org/thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073149 [4/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/https://lists.apache.org/thread.html/r734a07156abf332d5ab27fb91d9d962cacfef4f3681e44056f064fa8%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210603 svn commit: r1075360 [1/3] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/r5f9c22f9c28adbd9f00556059edc7b03a5d5bb71d4bb80257c0d34e4%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210606 svn commit: r1075467 [1/2] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/rb9c9f42dafa25d2f669dac2a536a03f2575bc5ec1be6f480618aee10%40%3Ccvs.httpd.apache.org%3E
- lists.apache.org[httpd-cvs] 20210606 svn commit: r1075470 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.htmlhttps://lists.apache.org/thread.html/r5001ecf3d6b2bdd0b732e527654248abb264f08390045d30709a92f6%40%3Ccvs.httpd.apache.org%3E
07 Fixed in
Debian 12
- apache2 Fixed in 2.0.50-11
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- apache2 Fixed in 2.0.50-11
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- apache2 Fixed in 2.0.50-11
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.