[pull] master from php:master #860
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
The copy function does two things wrong: - The error recovery logic is a hack that temporarily moves the fp pointer to cfp, even though it's not compressed. The respective error recovery it talks about is not present in the code, nor is it necessary. This is the direct cause of the double free in the original reproducer. Fixing this makes it crash in another location though. - The link following logic is inconsistent and illogical. It cannot be a link at this point. The root cause, after fixing the above issues, is that the file pointers are not reset properly for the copy. The file pointer need to be the original ones to perform the copy from the right source, but after that they need to be set properly to NULL (because fp_type == PHAR_FP). Closes GH-19035. Co-authored-by: Yun Dou <[email protected]>
* PHP-8.3: Fix stream double free in phar
* PHP-8.4: Fix stream double free in phar
There are two bugfixes here. The first was a crash that I discovered while working on GH-19035. The check for when a file pointer was still occupied was wrong, leading to a UAF. Strangely, zip got this right. The second issue was that even after fixing the first one, the file contents were garbage. This is because the file write offset for the phar stream was wrong. Closes GH-19038.
* PHP-8.3: Fix phar crash and file corruption with SplFileObject
* PHP-8.4: Fix phar crash and file corruption with SplFileObject
Sign up for free
to subscribe to this conversation on GitHub.
Already have an account?
Sign in.
1 participant
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
See Commits and Changes for more details.
Created by
pull[bot] (v2.0.0-alpha.2)
Can you help keep this open source service alive? 💖 Please sponsor : )