CVE-2021-39229
Apprise is an open source library which allows you to send a notification to almost all of the most popular notification services available.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Apprise is an open source library which allows you to send a notification to almost all of the most popular notification services available. In affected versions users who use Apprise granting them access to the IFTTT plugin (which just comes out of the box) are subject to a denial of service attack on an inefficient regular expression. The vulnerable regular expression is [here](https://github.com/caronc/apprise/blob/0007eade20934ddef0aba38b8f1aad980cfff253/apprise/plugins/NotifyIFTTT.py#L356-L359). The problem has been patched in release version 0.9.5.1. Users who are unable to upgrade are advised to remove `apprise/plugins/NotifyIFTTT.py` to eliminate the service.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.89% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- nuxref/apprise
- Source
- security-advisories@github.com
References
- https://github.com/caronc/apprise/blob/0007eade20934ddef0aba38b8f1aad980cfff253/apprise/plugins/NotifyIFTTT.py#L356-L359Exploit, Third Party Advisory
- https://github.com/caronc/apprise/pull/436Patch, Third Party Advisory
- https://github.com/caronc/apprise/security/advisories/GHSA-qhmp-h54x-38qrThird Party Advisory
- https://github.com/caronc/apprise/blob/0007eade20934ddef0aba38b8f1aad980cfff253/apprise/plugins/NotifyIFTTT.py#L356-L359Exploit, Third Party Advisory
- https://github.com/caronc/apprise/pull/436Patch, Third Party Advisory
- https://github.com/caronc/apprise/security/advisories/GHSA-qhmp-h54x-38qrThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.