dotmesh-io dotmesh up to 0.8.1 out-of-bounds write

Summaryinfo

A vulnerability identified as critical has been detected in dotmesh-io dotmesh up to 0.8.1. This affects an unknown function. The manipulation leads to out-of-bounds write. This vulnerability is documented as CVE-2020-26312. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in dotmesh-io dotmesh up to 0.8.1 and classified as critical. This issue affects some unknown functionality. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Dotmesh is a git-like command-line interface for capturing, organizing and sharing application states. In versions 0.8.1 and prior, the unsafe handling of symbolic links in an unpacking routine may enable attackers to read and/or write to arbitrary locations outside the designated target folder. The routine `untarFile` attempts to guard against creating symbolic links that point outside the directory a tar archive is extracted to. However, a malicious tarball first linking `subdir/parent` to `..` (allowed, because `subdir/..` falls within the archive root) and then linking `subdir/parent/escapes` to `..` results in a symbolic link pointing to the tarball’s parent directory, contrary to the routine’s goals. This issue may lead to arbitrary file write (with same permissions as the program running the unpack operation) if the attacker can control the archive file. Additionally, if the attacker has read access to the unpacked files, they may be able to read arbitrary system files the parent process has permissions to read. As of time of publication, no patch for this issue is available.

It is possible to read the advisory at securitylab.github.com. The identification of this vulnerability is CVE-2020-26312 since 10/01/2020. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/14/2024).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• dotmesh-io

Name

• dotmesh

Version

• 0.8.0
• 0.8.1

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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