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CVE-2020-29547

An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can...

5.9 Medium

CVE-2020-29547 is a medium vulnerability (CVSS 5.9) in Citadel Webcit, published May 29, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.75%, the 55th percentile. No source names a fixed version.

What does this mean?
Severity
5.9 MediumCVSS 3.1, NVD
Exploit chance
0.75%EPSS, 55th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.75%Up 0.7 points since May 30, 2023
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
citadel
Ubuntu:16.04:LTS
All versions, plus listed versions
9.01-1
None known
citadel
Ubuntu:18.04:LTS
All versions, plus listed versions
911-1917-2
None known
citadel
Ubuntu:20.04:LTS
All versions, plus listed versions
917-3917-4
None known

What each source reports

NVD Score used5.9

An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.

Record
CVE-2020-29547
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-77
Updated
2026-11-02
CVE List5.9

An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.

Record
CVE-2020-29547
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-77
Updated
2026-11-02
EUVDEUVD-2020-219135.9

An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.

Record
EUVD-2020-21913
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-xhj4-5383-37r25.9

An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can...

An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.

Record
GHSA-xhj4-5383-37r2
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-77
Updated
2026-11-02
OSVUBUNTU-CVE-2020-295475.9

An issue was discovered in Citadel through webcit-926. Meddler-in-the-middle attackers can pipeline commands after POP3 STLS, IMAP STARTTLS, or SMTP STARTTLS commands, injecting cleartext commands into an encrypted user session. This can lead to credential disclosure.

Record
UBUNTU-CVE-2020-29547
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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