CVE-2017-17688, also known as EFAIL, describes a Cipher Feedback Mode (CFB) malleability-gadget attack within the OpenPGP specification that can indirectly lead to plaintext exfiltration. This vulnerability primarily affects applications that mishandle the Modification Detection Code (MDC) feature or accept obsolete packet types, impacting products from vendors such as Apple, Mozilla, and Microsoft. The attack has a medium severity CVSS score of 5.9, indicating a network-based attack with high complexity and potential for high confidentiality impact, but no integrity or availability impact. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available, though it has received some community and media attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:apple:mail:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:apple:mail:-:*:*:*:*:iphone_os:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:bloop:airmail:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:emclient:emclient:-:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:flipdogsolutions:maildroid:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.