RHSA-2008:0715
Vulnerability from csaf_redhat - Published: 2008-07-24 16:53 - Updated: 2026-06-25 10:35Race condition in nss_ldap, when used in applications that are linked against the pthread library and fork after a call to nss_ldap, might send user data to the wrong process because of improper handling of the LDAP connection. NOTE: this issue was originally reported for Dovecot with the wrong mailboxes being returned, but other applications might also be affected.
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| Unresolved product id: 4AS:nss_ldap-0:253-5.el4.ia64 | — |
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| Unresolved product id: 4AS:nss_ldap-0:253-5.el4.ppc | — |
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| Unresolved product id: 4AS:nss_ldap-0:253-5.el4.ppc64 | — |
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| Unresolved product id: 4AS:nss_ldap-0:253-5.el4.s390 | — |
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| Unresolved product id: 4AS:nss_ldap-0:253-5.el4.s390x | — |
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| Unresolved product id: 4AS:nss_ldap-0:253-5.el4.src | — |
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| Unresolved product id: 4AS:nss_ldap-0:253-5.el4.x86_64 | — |
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| Unresolved product id: 4AS:nss_ldap-debuginfo-0:253-5.el4.i386 | — |
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| Unresolved product id: 4AS:nss_ldap-debuginfo-0:253-5.el4.ia64 | — |
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| Unresolved product id: 4AS:nss_ldap-debuginfo-0:253-5.el4.ppc | — |
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| Unresolved product id: 4AS:nss_ldap-debuginfo-0:253-5.el4.s390 | — |
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| Unresolved product id: 4AS:nss_ldap-debuginfo-0:253-5.el4.x86_64 | — |
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| Unresolved product id: 4Desktop:nss_ldap-0:253-5.el4.i386 | — |
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| Unresolved product id: 4Desktop:nss_ldap-0:253-5.el4.x86_64 | — |
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| Unresolved product id: 4Desktop:nss_ldap-debuginfo-0:253-5.el4.i386 | — |
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| Unresolved product id: 4ES:nss_ldap-0:253-5.el4.src | — |
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| Unresolved product id: 4ES:nss_ldap-0:253-5.el4.x86_64 | — |
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| Unresolved product id: 4ES:nss_ldap-debuginfo-0:253-5.el4.i386 | — |
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| Unresolved product id: 4ES:nss_ldap-debuginfo-0:253-5.el4.ia64 | — |
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| Unresolved product id: 4WS:nss_ldap-0:253-5.el4.i386 | — |
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| Unresolved product id: 4WS:nss_ldap-0:253-5.el4.ia64 | — |
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| Unresolved product id: 4WS:nss_ldap-0:253-5.el4.src | — |
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| Unresolved product id: 4WS:nss_ldap-0:253-5.el4.x86_64 | — |
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| Unresolved product id: 4WS:nss_ldap-debuginfo-0:253-5.el4.i386 | — |
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"text": "The nss_ldap package contains the nss_ldap and pam_ldap modules. The\nnss_ldap module is a plug-in which allows applications to retrieve\ninformation about users and groups from a directory server. The pam_ldap\nmodule allows PAM-aware applications to use a directory server to verify\nuser passwords.\n\nA race condition was discovered in nss_ldap, which affected certain\napplications that make LDAP connections, such as Dovecot. This could cause\nnss_ldap to answer a request for information about one user with the\ninformation about a different user. (CVE-2007-5794)\n\nAs well, this updated package fixes the following bugs:\n\n* in certain situations, on Itanium(R) architectures, when an application\nperformed an LDAP lookup for a highly populated group, for example,\ncontaining more than 150 members, the application crashed, or may have\ncaused a segmentation fault. As well, this issue may have caused commands,\nsuch as \"ls\", to return a \"ber_free_buf: Assertion\" error.\n\n* when an application enumerated members of a netgroup, the nss_ldap\nmodule returned a successful status result and the netgroup name, even\nwhen the netgroup did not exist. This behavior was not consistent with\nother modules. In this updated package, nss_ldap no longer returns a\nsuccessful status when the netgroup does not exist.\n\n* in master and slave server environments, with systems that were\nconfigured to use a read-only directory server, if user log in attempts\nwere denied because their passwords had expired, and users attempted to\nimmediately change their passwords, the replication server returned an LDAP\nreferral, instructing the pam_ldap module to resissue its request to a\ndifferent server; however, the pam_ldap module failed to do so. In these\nsituations, an error such as the following occurred:\n\nLDAP password information update failed: Can\u0027t contact LDAP server\nInsufficient \u0027write\u0027 privilege to the \u0027userPassword\u0027 attribute of entry\n[entry]\n\nIn this updated package, password changes are allowed when binding against\na slave server, which resolves this issue.\n\n* when a system used a directory server for naming information, and\n\"nss_initgroups_ignoreusers root\" was configured in \"/etc/ldap.conf\",\ndbus-daemon-1 would hang. Running the \"service messagebus start\" command\ndid not start the service, and it did not fail, which would stop the boot\nprocess if it was not cancelled.\n\nAs well, this updated package upgrades nss_ldap to the version as shipped\nwith Red Hat Enterprise Linux 5.\n\nUsers of nss_ldap are advised to upgrade to this updated package, which\nresolves these issues.",
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"ids": [
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}
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"text": "Race condition in nss_ldap, when used in applications that are linked against the pthread library and fork after a call to nss_ldap, might send user data to the wrong process because of improper handling of the LDAP connection. NOTE: this issue was originally reported for Dovecot with the wrong mailboxes being returned, but other applications might also be affected.",
"title": "Vulnerability description"
},
{
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"text": "nss_ldap randomly replying with wrong user\u0027s data",
"title": "Vulnerability summary"
}
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}
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.