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    CVE-2007-6598

    Dovecot before 1.0.10, with certain configuration options including use of %variables, does not properly maintain the LDAP+auth cache, which might allow remote authenticated users to login as a different user who has the same password.

    Published:Dec 29, 2007
    Last Modified:Apr 23, 2026
    EPS:Jan 4, 2008
    EPSS Score:0.02525
    CVSS Score:6.8

    Affected Products

    Vendor
    Dovecot
    Product
    Dovecot
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-42006 (CVSS 4.3) — An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 wa…
    CVE-2026-40020 (CVSS 3.1) — Attacker can use the IMAP SETACL command to inject the anyone permission to user's dovecot-acl file even if im…
    CVE-2026-40016 (CVSS 5.3) — Attacker can upload a malicious Sieve script over ManageSieve service (or locally) to bypass configured CPU ti…
    CVE-2026-33603 (CVSS 6.8) — Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel bind…
    CVE-2026-27851 (CVSS 7.4) — When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly i…
    CVE-2026-27860 (CVSS 3.7) — If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authenticati…
    CVE-2026-27859 (CVSS 5.3) — A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suit…
    CVE-2026-27858 (CVSS 7.5) — Attacker can send a specifically crafted message before authentication that causes managesieve to allocate lar…
    CVE-2026-27857 (CVSS 4.3) — Sending "NOOP (((...)))" command with 4000 parenthesis open+close results in ~1MB extra memory usage. Longer c…
    CVE-2026-27856 (CVSS 7.4) — Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An atta…

    References

    http://dovecot.org/list/dovecot-news/2007-December/000057.html
    http://dovecot.org/list/dovecot-news/2007-December/000058.html
    http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00004.html
    http://osvdb.org/39876
    http://secunia.com/advisories/28227
    http://secunia.com/advisories/28271
    http://secunia.com/advisories/28404
    http://secunia.com/advisories/28434
    http://secunia.com/advisories/30342
    http://secunia.com/advisories/32151
    http://www.debian.org/security/2008/dsa-1457
    http://www.redhat.com/support/errata/RHSA-2008-0297.html
    http://www.securityfocus.com/archive/1/485779/100/0/threaded
    http://www.securityfocus.com/archive/1/485787/100/0/threaded
    http://www.securityfocus.com/bid/27093
    http://www.ubuntu.com/usn/usn-567-1
    http://www.vupen.com/english/advisories/2008/0017
    https://issues.rpath.com/browse/RPL-2076
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10458
    http://dovecot.org/list/dovecot-news/2007-December/000057.html
    http://dovecot.org/list/dovecot-news/2007-December/000058.html
    http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00004.html
    http://osvdb.org/39876
    http://secunia.com/advisories/28227
    http://secunia.com/advisories/28271
    http://secunia.com/advisories/28404
    http://secunia.com/advisories/28434
    http://secunia.com/advisories/30342
    http://secunia.com/advisories/32151
    http://www.debian.org/security/2008/dsa-1457
    http://www.redhat.com/support/errata/RHSA-2008-0297.html
    http://www.securityfocus.com/archive/1/485779/100/0/threaded
    http://www.securityfocus.com/archive/1/485787/100/0/threaded
    http://www.securityfocus.com/bid/27093
    http://www.ubuntu.com/usn/usn-567-1
    http://www.vupen.com/english/advisories/2008/0017
    https://issues.rpath.com/browse/RPL-2076
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10458

    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