opensuse-su-2022:0016-1
Vulnerability from csaf_opensuse
Published
2022-01-17 20:11
Modified
2022-01-17 20:11
Summary
Security update for watchman

Notes

Title of the patch
Security update for watchman
Description of the patch
This update for watchman fixes the following issues: - ship README.suse that explains how to use the template systemd units - add user writable bit for systemd service and socket files - properly handle state directory creation in /run/watchman/$USER-state. The former approach was susceptible to a local privilege escalation using symlinks (CVE-2022-21944, boo#1194470). - Added hardening to systemd service(s) (boo#1181400). Modified: * watchman@.service - removed python2 bindings - enabled python3 bindings as python3-watchman - Changes in 4.8.0: * New command `flush-subscriptions` to synchronize subscriptions associated with the current session. * Enforce socket Unix groups more strongly — Watchman will now refuse to start if it couldn't gain the right group memberships, as can happen for sites that are experiencing intermittent LDAP connectivity problems. * pywatchman now officially supports Python 3. pywatchman will return Unicode strings (possibly with surrogate escapes) by default, but can optionally return bytestrings. Note that on Python 3, pywatchman requires Watchman 4.8 and above. The Python 2 interface and requirements remain unchanged. * Prior to 4.8, methods on the Java WatchmanClient that returned ListenableFutures would swallow exceptions and hang in an unfinished state under situations like socket closure or thread death. This has been fixed, and now ListenableFutures propagate exception conditions immediately. (Note that this is typically unrecoverable, and users should create a new WatchmanClient to re-establish communication with Watchman.) See #412. * The minimum Java version for the Watchman Java client has always been 1.7, but it was incorrectly described to be 1.6. The Java client's build file has been fixed accordingly. * Watchman was converted from C to C++. The conversion exposed several concurrency bugs, all of which have now been fixed. * Subscription queries are now executed in the context of the client thread, which means that subscriptions are dispatched in parallel. Previously, subscriptions would be serially dispatched and block the disk IO thread. * Triggers are now dispatched in parallel and waits are managed in their own threads (one thread per trigger). This improves concurrency and resolves a couple of waitpid related issues where watchman may not reap spawned children in a timely fashion, or may spin on CPU until another child is spawned. * Fixed an object lifecycle management issue that could cause a crash when aging out old/transient files. * Implement an upgraded wire protocol, BSERv2, on the server and in pywatchman. BSERv2 can carry information about string encoding over the wire. This lets pywatchman convert to Unicode strings on Python 3. Clients and servers know how to transparently fall back to BSERv1. - Changes in 4.9.0: * New field: `content.sha1hex`. This field expands to the SHA1 hash of the file contents, expressed in hex digits (40 character hex string). Watchman maintains a cache of the content hashes and can compute the hash on demand and also heuristically as files are changed. This is useful for tooling that wants to perform more intelligent cache invalidation or build artifact fetching from content addressed storage. * Fixed an issue that resulted in the perf logging thread deadlocking when `perf_logger_command` is enabled in the global configuration * Fixed an issue where queries larger than 1MB would likely result in a PDU error response. * Reduced lock contention for subscriptions that do no use the advanced settling (`drop`, `defer`) options. * Fixed `since` generator behavior when using unix timestamps rather than the preferred clock string syntax * Improved the reporting of 'new' files in watchman results * Improved performance of handling changes on case insensitive filesystems * pywatchman: the python wheel format is used for publishing watchman pypi package * pywatchman: now watchman path is configurable in python client * pywatchman: now python client can be used as a context manager
Patchnames
openSUSE-2022-16
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

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          "text": "A UNIX Symbolic Link (Symlink) Following vulnerability in the systemd service file for watchman of openSUSE Backports SLE-15-SP3, Factory allows local attackers to escalate to root. This issue affects: openSUSE Backports SLE-15-SP3 watchman versions prior to 4.9.0. openSUSE Factory watchman versions prior to 4.9.0-9.1.",
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      "title": "CVE-2022-21944"
    }
  ]
}


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