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CVE-2020-7046

HIGH
7.5
CVSS Score
Published: February 12, 2020 at 04:40 PM UTC
Updated: June 17, 2026 at 03:24 AM UTC
2 products affected across 2 vendorsFedoraDovecot

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Severity
HIGH7.5
Exploit prediction
EPSS 51%

Description

lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in command parameters, as demonstrated by the unauthenticated triggering of a submission-login infinite loop.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Dovecot· Dovecot
95%
2.3.9 ≤ v < 2.3.9.3
Affected range stops below 2.3.9.3, so it looks safe — our inference, not a vendor statement
Fedora· Fedora Projectrpm
95%
3031

References (5)

x_refsource_CONFIRMMailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/02/12/1
x_refsource_CONFIRMMailing ListVendor Advisory
Source: [email protected]
https://dovecot.org/pipermail/dovecot-news/2020-February/000431.html
x_refsource_MISCVendor Advisory
Source: [email protected]
https://dovecot.org/security
Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-835

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