CVE-2021-37845 Security feature bypass in n/a
A man-in-the-middle attacker can hijack sessions during the cleartext phase before STARTTLS, potentially redirecting victim emails to the attacker's mailbox.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-37845?
CVE-2021-37845 is a low-severity vulnerability in n/a, published on 29 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Citadel through webcit-932. A meddler-in-the-middle attacker can fixate their own session during the cleartext phase before a STARTTLS command (a violation of "The STARTTLS command is only valid in non-authenticated state." in RFC2595). This potentially allows an attacker to cause a victim's e-mail messages to be stored into an attacker's IMAP mailbox, but depends on details of the victim's client behavior.
Which versions are affected by CVE-2021-37845?
It affects 1 product.
Products include Citadel Webcit.
How do I fix CVE-2021-37845?
No fix has been published for CVE-2021-37845 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-37845 being exploited?
There is no known exploitation of CVE-2021-37845 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-hh3j-j42w-mrpm, UBUNTU-CVE-2021-37845.