CVE-2021-26473
In VembuBDR before 4.2.0.1 and VembuOffsiteDR before 4.2.0.1 the http API located at /sgwebservice_o.php action logFilePath allows an attacker to write arbitrary files in the context of the web server process.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.76%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In VembuBDR before 4.2.0.1 and VembuOffsiteDR before 4.2.0.1 the http API located at /sgwebservice_o.php action logFilePath allows an attacker to write arbitrary files in the context of the web server process. These files can then be executed remotely by calling the file via the web server.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.76% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- vembu/bdr suite · vembu/offsite dr
- Source
- cve@mitre.org
References
- https://csirt.divd.nl/2021/05/11/Vembu-zero-days/Third Party Advisory
- https://csirt.divd.nl/cases/DIVD-2020-00011/Third Party Advisory
- https://csirt.divd.nl/cves/CVE-2021-26473/Third Party Advisory
- https://www.wbsec.nl/vembuBroken Link, Third Party Advisory
- https://csirt.divd.nl/2021/05/11/Vembu-zero-days/Third Party Advisory
- https://csirt.divd.nl/cases/DIVD-2020-00011/Third Party Advisory
- https://csirt.divd.nl/cves/CVE-2021-26473/Third Party Advisory
- https://www.wbsec.nl/vembuBroken Link, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.