VulnerabilityModified
CVE-2021-27771
User SID can be modified resulting in an Arbitrary File Upload or deletion of directories causing a Denial of Service.
HIGH 7.6EPSS 0.72%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
User SID can be modified resulting in an Arbitrary File Upload or deletion of directories causing a Denial of Service. When interacting in a normal matter with the Sametime chat application, users hold a cookie containing their session ID (SID). This value is also used when sending chat messages, receiving notifications and/or transferring files.
- CVSS 3.1
- 7.6 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
- EPSS
- 0.72% probability · 52th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22, CWE-434
- Affected
- hcltech/sametime
- Source
- psirt@hcl.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.