CVE-2024-12085

A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.

A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialized stack data at a time.

A flaw was found in rsync. It could allow a server to enumerate the contents of an arbitrary file from the client's machine. This issue occurs when files are being copied from a client to a server. During this process, the rsync server will send checksums of local data to the client to compare with in order to determine what data needs to be sent to the server. By sending specially constructed checksum values for arbitrary files, an attacker may be able to reconstruct the data of those files byte-by-byte based on the responses from the client.

A path traversal vulnerability exists in rsync. It stems from behavior enabled by the --inc-recursive option, a default-enabled option for many client options and can be enabled by the server even if not explicitly enabled by the client. When using the --inc-recursive option, a lack of proper symlink verification coupled with deduplication checks occurring on a per-file-list basis could allow a server to write files outside of the client's intended destination directory. A malicious server could write malicious files to arbitrary locations named after valid directories/paths on the client.

A flaw was found in rsync. When using the --safe-links option, the rsync client fails to properly verify if a symbolic link destination sent from the server contains another symbolic link within it. This results in a path traversal vulnerability, which may lead to arbitrary file write outside the desired directory.

A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialized stack data at a time.

A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialized stack data at a time.

Rsync is an open source utility that provides fast incremental file transfer. It uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync. It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand.

Security Fix(es):

(CVE-2024-12085)

(CVE-2024-12086)

(CVE-2024-12087)

(CVE-2024-12088)

(CVE-2024-12747)

Rsync is an open source utility that provides fast incremental file transfer. It uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync. It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand.

Security Fix(es):

(CVE-2024-12084)

(CVE-2024-12085)

(CVE-2024-12086)

(CVE-2024-12087)

(CVE-2024-12088)

(CVE-2024-12747)

Rsync is an open source utility that provides fast incremental file transfer. It uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync. It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand.

Security Fix(es):

(CVE-2024-12085)

(CVE-2024-12086)

(CVE-2024-12087)

(CVE-2024-12088)

(CVE-2024-12747)

Rsync is an open source utility that provides fast incremental file transfer. It uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync. It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand.

Security Fix(es):

(CVE-2024-12085)

(CVE-2024-12086)

(CVE-2024-12087)

(CVE-2024-12088)

(CVE-2024-12747)

Rsync is an open source utility that provides fast incremental file transfer. It uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync. It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand.

Security Fix(es):

(CVE-2024-12084)

(CVE-2024-12085)

(CVE-2024-12086)

(CVE-2024-12087)

(CVE-2024-12088)

(CVE-2024-12747)

A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialized stack data at a time.

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool.

Security Fix(es):

• rsync: Info Leak via Uninitialized Stack Contents (CVE-2024-12085)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool.

Security Fix(es):

• rsync: Info Leak via Uninitialized Stack Contents (CVE-2024-12085)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialized stack data at a time.

A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialized stack data at a time.

• CVE-2024-12088: fix path traversal vulnerability by properly verifying symbolic link destinations
• CVE-2024-12085: fix issue with checksum length manipulation leading to uninitialized memory leak

• CVE-2024-12085: prevent leak of uninitialised stack data in hash_search

• CVE-2024-12088: fix path traversal vulnerability by properly verifying symbolic link destinations
• CVE-2024-12085: fix issue with checksum length manipulation leading to uninitialized memory leak

• SECURITY UPDATE: possible information leak via checksum comparison
  • debian/patches/CVE-2024-12085.patch: fix issue with checksum length manipulation leading to uninitialized memory leak
  • CVE-2024-12085

• CVE-2024-12085: fix to prevent information leak off the stack

• SECURITY UPDATE: possible information leak via checksum comparison
  • debian/patches/CVE-2024-12085.patch: fix issue with checksum length manipulation leading to uninitialized memory leak
  • CVE-2024-12085

• CVE-2024-12085: fix to prevent information leak off the stack

• CVE-2024-12085: Fix issue where checksum length manipulation could leak uninitialized stack data during file comparison.

• SECURITY UPDATE: information leak of uninitialized stack memory via an attacker-controlled checksum length (s2length) in hash_search():
  • debian/patches/els/0008-CVE-2024-12085.patch: zero the local sum2 buffer on entry to hash_search().
  • CVE-2024-12085.

Heap buffer overflow in rsync due to improper checksum length handling. (CVE-2024-12084) Info leak via uninitialized stack contents. (CVE-2024-12085) Rsync server leaks arbitrary client files. (CVE-2024-12086) Path traversal vulnerability in rsync. (CVE-2024-12087) Rsync --safe-links option bypass leads to path traversal. (CVE-2024-12088) Race condition in rsync handling symbolic links. (CVE-2024-12747)

These are all security issues fixed in the rsync-3.4.1-1.1 package on the GA media of openSUSE Tumbleweed.

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool.

Security Fix(es):

• rsync: Info Leak via Uninitialized Stack Contents (CVE-2024-12085)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool.

Security Fix(es):

• rsync: Info Leak via Uninitialized Stack Contents (CVE-2024-12085)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This update for rsync fixes the following issues:

• CVE-2024-12084: heap buffer overflow in checksum parsing. (bsc#1234100)
• CVE-2024-12085: leak of uninitialized stack data on the server leading to possible ASLR bypass. (bsc#1234101)
• CVE-2024-12086: leak of a client machine's file contents through the processing of checksum data. (bsc#1234102)
• CVE-2024-12087: arbitrary file overwrite possible on clients when symlink syncing is enabled. (bsc#1234103)
• CVE-2024-12088: bypass of the --safe-links flag may allow the placement of unsafe symlinks in a client. (bsc#1234104)
• CVE-2024-12747: race condition in rsync handling symbolic links (bsc#1235475)

This update for rsync fixes the following issues:

• CVE-2024-12085: leak of uninitialized stack data on the server leading to possible ASLR bypass. (bsc#1234101)
• CVE-2024-12086: leak of a client machine's file contents through the processing of checksum data. (bsc#1234102)
• CVE-2024-12087: arbitrary file overwrite possible on clients when symlink syncing is enabled. (bsc#1234103)
• CVE-2024-12088: bypass of the --safe-links flag may allow the placement of unsafe symlinks in a client. (bsc#1234104)
• CVE-2024-12747: Fixed a race condition in rsync handling symbolic links. (bsc#1235475)

This update for rsync fixes the following issues:

• CVE-2024-12085: leak of uninitialized stack data on the server leading to possible ASLR bypass. (bsc#1234101)
• CVE-2024-12086: leak of a client machine's file contents through the processing of checksum data. (bsc#1234102)
• CVE-2024-12087: arbitrary file overwrite possible on clients when symlink syncing is enabled. (bsc#1234103)
• CVE-2024-12088: bypass of the --safe-links flag may allow the placement of unsafe symlinks in a client. (bsc#1234104)
• CVE-2024-12747: Fixed a race condition in rsync handling symbolic links. (bsc#1235475)

This update for rsync fixes the following issues:

• CVE-2024-12085: leak of uninitialized stack data on the server leading to possible ASLR bypass. (bsc#1234101)
• CVE-2024-12086: leak of a client machine's file contents through the processing of checksum data. (bsc#1234102)
• CVE-2024-12087: arbitrary file overwrite possible on clients when symlink syncing is enabled. (bsc#1234103)
• CVE-2024-12088: bypass of the --safe-links flag may allow the placement of unsafe symlinks in a client. (bsc#1234104)
• CVE-2024-12747: Fixed a race condition in handling symbolic links. (bsc#1235475)