Md Mahir Asef Kabir created VFS-792: ---------------------------------------
Summary: Usage of default mode for "AES" is insecure Key: VFS-792 URL: https://issues.apache.org/jira/browse/VFS-792 Project: Commons VFS Issue Type: Improvement Reporter: Md Mahir Asef Kabir In file [https://github.com/apache/commons-vfs/blob/bd1ed002b0fb0f43505adc469479eb11e9bf731a/commons-vfs2/src/main/java/org/apache/commons/vfs2/util/DefaultCryptor.java] (at Line 61), the default "AES" algorithm has been used which imposes insecure "ECB" mode. *Security Impact*: ECB mode allows the attacker to do the following - detect whether two ECB-encrypted messages are identical; detect whether two ECB-encrypted messages share a common prefix; detect whether two ECB-encrypted messages share other common substrings, as long as those substrings are aligned at block boundaries; or detect whether (and where) a single ECB-encrypted message contains repetitive data (such as long runs of spaces or null bytes, repeated header fields, or coincidentally repeated phrases in the text). - Collected from [here|https://crypto.stackexchange.com/questions/20941/why-shouldnt-i-use-ecb-encryption#:~:text=The%20main%20reason%20not%20to,will%20leak%20to%20some%20extent).] *Useful Resources*: [https://blog.filippo.io/the-ecb-penguin/] *Solution we suggest*: Use GCM mode instead of default or ECB mode. *Please share with us your opinions/comments if there is any*: Is the bug report helpful? -- This message was sent by Atlassian Jira (v8.3.4#803005)