| Summary: | crypt(3) incorrect key length | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Jeff Bastian <jbastian> | ||||
| Component: | man-pages | Assignee: | Ivana Varekova <varekova> | ||||
| Status: | CLOSED ERRATA | QA Contact: | BaseOS QE - Apps <qe-baseos-apps> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 6.0 | CC: | rvokal | ||||
| Target Milestone: | rc | Keywords: | ManPageChange, Patch | ||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2011-05-19 14:01:26 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Attachments: |
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Created attachment 480226 [details]
patch to update crypt(3) man page
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0679.html |
Description of problem: The crypt(3) man page states: In the SHA implementation the entire key is significant (instead of only the first 8 bytes in MD5). This is incorrect. Both MD5 and SHA consider the entire key; it's DES that only uses the first 8 bytes. This was fixed upstream in man-pages-3.25; see the attached patch. Version-Release number of selected component (if applicable): man-pages-3.22-12.el6 Additional info: From the man-pages-3.25/Changes file: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ crypt.3 Petr Baudis Correct note on key portion significance As Marcel Moreaux notes: The Linux manpage for crypt()[1] contains the following statement as the last sentence of the NOTES section: In the SHA implementation the entire key is significant (instead of only the first 8 bytes in MD5). It should probably say "DES" where it says "MD5" (and maybe "MD5/SHA" where it says "SHA"), because in MD5 password hashing, the entire key is significant, not just the first 8 bytes. This patch fixes the wording. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~