CVE-2020-28896

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Source
https://nvd.nist.gov/vuln/detail/CVE-2020-28896
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28896.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-28896
Downstream
Related
Published
2020-11-23T19:15:11Z
Modified
2025-10-14T17:53:40.546489Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $sslforcetls was processed if an IMAP server's initial server response was invalid. The connection was not properly closed, and the code could continue attempting to authenticate. This could result in authentication credentials being exposed on an unencrypted connection, or to a machine-in-the-middle.

References

Affected packages

Git / github.com/neomutt/neomutt

Affected ranges

Type
GIT
Repo
https://github.com/neomutt/neomutt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
8a2fc8ca2b7653b213ab9b78a55a7a45bdc2a087
Fixed
9c36717a3e2af1f2c1b7242035455ec8112b4b06
Type
GIT
Repo
https://gitlab.com/muttmua/mutt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
04b06aaa3e0cc0022b9b01dbca2863756ebbf59a
Fixed
d92689088dfe80a290ec836e292376e2d9984f8f

Affected versions

Other

2019-10-25
20191102
20191111
20191129
20191207
20200313
20200320
20200417
20200424
20200501
20200619
20200626
20200807
20200814
20200821
20200925
mutt-0-92-10i
mutt-0-92-11i
mutt-0-92-9i
mutt-0-93-unstable
mutt-0-94-10i-rel
mutt-0-94-13-rel
mutt-0-94-14-rel
mutt-0-94-15-rel
mutt-0-94-16i-rel
mutt-0-94-17i-rel
mutt-0-94-18-rel
mutt-0-94-5i-rel
mutt-0-94-6i-rel
mutt-0-94-7i-rel
mutt-0-94-8i-rel
mutt-0-94-9i-p1
mutt-0-94-9i-rel
mutt-0-95-rel
mutt-0-96-1-rel
mutt-0-96-2-slightly-post-release
mutt-0-96-3-rel
mutt-0-96-4-rel
mutt-0-96-5-rel
mutt-0-96-6-rel
mutt-0-96-7-rel
mutt-0-96-8-rel
mutt-0-96-rel
mutt-1-1-1-1-rel
mutt-1-1-1-2-rel
mutt-1-1-1-rel
mutt-1-1-10-rel
mutt-1-1-11-rel
mutt-1-1-12-rel
mutt-1-1-13-rel
mutt-1-1-14-rel
mutt-1-1-2-rel
mutt-1-1-3-rel
mutt-1-1-4-rel
mutt-1-1-5-rel
mutt-1-1-6-rel
mutt-1-1-7-rel
mutt-1-1-8-rel
mutt-1-1-9-rel
mutt-1-1-rel
mutt-1-10-1-rel
mutt-1-10-rel
mutt-1-11-1-rel
mutt-1-11-2-rel
mutt-1-11-3-rel
mutt-1-11-4-rel
mutt-1-11-rel
mutt-1-12-1-rel
mutt-1-12-2-rel
mutt-1-12-rel
mutt-1-13-1-rel
mutt-1-13-2-rel
mutt-1-13-3-rel
mutt-1-13-4-rel
mutt-1-13-5-rel
mutt-1-13-rel
mutt-1-14-1-rel
mutt-1-14-2-rel
mutt-1-14-3-rel
mutt-1-14-4-rel
mutt-1-14-5-rel
mutt-1-14-6-rel
mutt-1-14-7-rel
mutt-1-14-rel
mutt-1-3-1-rel
mutt-1-3-10-rel
mutt-1-3-11-rel
mutt-1-3-12-rel
mutt-1-3-13-rel
mutt-1-3-14-rel
mutt-1-3-15-rel
mutt-1-3-16-rel
mutt-1-3-17-rel
mutt-1-3-18-rel
mutt-1-3-19-rel
mutt-1-3-2-rel
mutt-1-3-20-rel
mutt-1-3-21-rel
mutt-1-3-22-1-rel
mutt-1-3-22-rel
mutt-1-3-23-1-rel
mutt-1-3-23-2-rel
mutt-1-3-23-rel
mutt-1-3-24-rel
mutt-1-3-25-rel
mutt-1-3-26-rel
mutt-1-3-27-rel
mutt-1-3-3-rel
mutt-1-3-4-rel
mutt-1-3-5-rel
mutt-1-3-6-rel
mutt-1-3-7-rel
mutt-1-3-8-rel
mutt-1-3-9-rel
mutt-1-3-rel
mutt-1-5-1-rel
mutt-1-5-10-rel
mutt-1-5-11-rel
mutt-1-5-12-rel
mutt-1-5-13-rel
mutt-1-5-14-rel
mutt-1-5-15-rel
mutt-1-5-16-rel
mutt-1-5-17-rel
mutt-1-5-18-rel
mutt-1-5-19-rel
mutt-1-5-2-rel
mutt-1-5-20-rel
mutt-1-5-21-rel
mutt-1-5-22-rel
mutt-1-5-23-rel
mutt-1-5-24-rel
mutt-1-5-3-rel
mutt-1-5-4-rel
mutt-1-5-5-1-rel
mutt-1-5-5-rel
mutt-1-5-6-rel
mutt-1-5-7-rel
mutt-1-5-8-rel
mutt-1-5-9-rel
mutt-1-6-1-rel
mutt-1-6-2-rel
mutt-1-6-rel
mutt-1-7-1-rel
mutt-1-7-2-rel
mutt-1-7-rel
mutt-1-8-1-rel
mutt-1-8-2-rel
mutt-1-8-3-rel
mutt-1-8-rel
mutt-1-9-1-rel
mutt-1-9-2-rel
mutt-1-9-3-rel
mutt-1-9-4-rel
mutt-1-9-5-rel
mutt-1-9-rel
mutt-2-0-1-rel
mutt-2-0-rel
neomutt-20160822
neomutt-20160827
neomutt-20160910
neomutt-20160916
neomutt-20161002
neomutt-20161003
neomutt-20161014
neomutt-20161028
neomutt-20161104
neomutt-20161126
neomutt-20170113
neomutt-20170128
neomutt-20170206
neomutt-20170225
neomutt-20170306
neomutt-20170414
neomutt-20170421
neomutt-20170428
neomutt-20170526
neomutt-20170602
neomutt-20170609
neomutt-20170707
neomutt-20170714
neomutt-20170907
neomutt-20170912
neomutt-20171006
neomutt-20171013
neomutt-20171027
neomutt-20171208
neomutt-20171215
neomutt-20180223
neomutt-20180323
neomutt-20180512
neomutt-20180622
neomutt-20180716
post-type-punning-patch
pre-type-punning-patch

Database specific 

{
    "vanir_signatures": [
        {
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "97681317069022648633321322422684727806",
                    "36785202708057762196942193442338311117",
                    "253597231540842366146788943724371966919",
                    "230559841208464531920669666737772608998",
                    "280466068186791739870138129894669237743",
                    "262021813882487199219046830141767096521"
                ]
            },
            "target": {
                "file": "imap/imap.c"
            },
            "deprecated": false,
            "source": "https://gitlab.com/muttmua/mutt@04b06aaa3e0cc0022b9b01dbca2863756ebbf59a",
            "signature_version": "v1",
            "id": "CVE-2020-28896-22711cd6",
            "signature_type": "Line"
        },
        {
            "digest": {
                "length": 1744.0,
                "function_hash": "202502016177147320487911206437497836801"
            },
            "target": {
                "file": "imap/imap.c",
                "function": "imap_open_connection"
            },
            "deprecated": false,
            "source": "https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06",
            "signature_version": "v1",
            "id": "CVE-2020-28896-310f4177",
            "signature_type": "Function"
        },
        {
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "286078888561440764963754111001874170214",
                    "138677912911684076071538171270727982409",
                    "8469493152676353125235616666611982766",
                    "151210996820641048238653260975568679385",
                    "197676711550233223041620179508224361397",
                    "243278584382770291463985835770676195496",
                    "49304822103842324147419956674017035501",
                    "258071259237864162367846400173725670645",
                    "158969505239337468576499793844749391902",
                    "198714526768278661163508272892097614317",
                    "81681430369553413535836371526730707296",
                    "312226577905102150186839279536172437",
                    "94155202352352823451083128446795154982",
                    "198714526768278661163508272892097614317",
                    "81681430369553413535836371526730707296",
                    "339158229765175876716905195750260807423",
                    "291147170475806138760391662777557853853",
                    "226677642943443396717113156868587596264",
                    "307552207789802678498210380374844441654",
                    "105762104976082084892920596628612734565",
                    "214200509669293428569750858998133236569",
                    "56322473773121290834197305658162405616",
                    "89938834577386823368124135839803635555",
                    "56309300704248097572272131029656428187"
                ]
            },
            "target": {
                "file": "imap/imap.c"
            },
            "deprecated": false,
            "source": "https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06",
            "signature_version": "v1",
            "id": "CVE-2020-28896-7565f4be",
            "signature_type": "Line"
        },
        {
            "digest": {
                "length": 1763.0,
                "function_hash": "4204636771050573989830569457519837991"
            },
            "target": {
                "file": "imap/imap.c",
                "function": "imap_open_connection"
            },
            "deprecated": false,
            "source": "https://gitlab.com/muttmua/mutt@04b06aaa3e0cc0022b9b01dbca2863756ebbf59a",
            "signature_version": "v1",
            "id": "CVE-2020-28896-9803c123",
            "signature_type": "Function"
        }
    ]
}