CyberSecBulletin
CVE-2024-45518NVD status: Analyzed

collaboration: Server-Side Request Forgery

Published Updated By the CyberSecBulletin desk

CVE-2024-45518 is a high-severity server-side request forgery vulnerability in collaboration from Zimbra, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists versions 10.1.1, 10.0.9, patch41 as the first without the flaw, so updating collaboration to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 20.7% chance of exploitation within 30 days, which is in the top 2.42% of all scored CVEs.

Patch this week

EPSS places it among the vulnerabilities most likely to be exploited soon.

What to do

  1. Update collaboration to 10.1.1 or 10.0.9 or patch41 or patch46, whichever matches your release line, or a later version.
  2. Read the advisory on wiki.zimbra.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
Zimbracollaboration10.1.0 up to, but not including, 10.1.1; 10.0.0 up to, but not including, 10.0.9; 9.0.0 up to, but not including, patch41; 8.8.15 up to, but not including, patch4610.1.1, 10.0.9, patch41, patch46

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.8HighNVD
CVSS 3.17.5HighCISA (ADP)

Official description

An issue was discovered in Zimbra Collaboration (ZCS) 10.1.x before 10.1.1, 10.0.x before 10.0.9, 9.0.0 before Patch 41, and 8.8.15 before Patch 46. It allows authenticated users to exploit Server-Side Request Forgery (SSRF) due to improper input sanitization and misconfigured domain whitelisting. This issue permits unauthorized HTTP requests to be sent to internal services, which can lead to Remote Code Execution (RCE) by chaining Command Injection within the internal service. When combined with existing XSS vulnerabilities, this SSRF issue can further facilitate Remote Code Execution (RCE).

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Server-Side Request Forgery

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

How developers prevent this class of flaw

  • If there is a known list of applications, IP, hostname, and/or domains to which the product is allowed to communicate, then use allowlists to ensure that outgoing requests are restricted to these known entities. The allowlists could be in the application code or possibly enforced by firewalls or network segmentation.
  • If the product is expected to be able to connect to arbitrary IP addresses or domains, consider using a denylist that includes private network addresses, internal domain names, etc. The denylist could be in the application code or possibly enforced by firewalls or network segmentation.

More Server-Side Request Forgery vulnerabilities (CWE-918)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in collaboration

All collaboration vulnerabilities

Recent Server-Side Request Forgery vulnerabilities

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