CVE-2020-1921

CVE-2020-1921 affects HHVM: the crypt function may terminate a buffer using the salt length without verifying the offset lies inside the buffer. Affected HHVM versions include before 4.56.3, 4.57.0–4.80.1, 4.81.0–4.93.1, and 4.94.0–4.98.0. The initial description provides the vulnerable condition...

CVE-2020-1919

CVE-2020-1919 affects HHVM: incorrect bounds calculations in substr_compare could cause an out-of-bounds read when the second string arg is longer than the first. Affected versions include all HHVM builds prior to 4.56.3, 4.57.0–4.80.1, 4.81.0–4.93.1, and 4.94.0–4.98.0. The connected documents pr...

CVE-2020-1919

Incorrect bounds calculations in substrcompare could lead to an out-of-bounds read when the second string argument passed in is longer than the first. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions...

CVE-2020-1918

CVE-2020-1918 affects HHVM: reading memory prior to the in‑memory buffer via fopen on a data URI due to improper restriction of negative seeking. Affected versions include HHVM before 4.56.3, 4.57.0–4.80.1, 4.81.0–4.93.1, and 4.94.0–4.98.0. The provided documents do not specify a final patched ve...

CVE-2020-1917

xbufformatconverter, used as part of exifreaddata, was appending a terminating null character to the generated string, but was not using its standard append char function. As a result, if the buffer was full, it would result in an out-of-bounds write. This issue affects HHVM versions prior to...

CVE-2020-1918

In-memory file operations ie: using fopen on a data URI did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, a...

CVE-2020-1917

The CVE-2020-1917 issue is a concrete bug in xbuf_format_converter (part of exif_read_data) in HHVM. It appends a terminating null without the normal append path, enabling an out-of-bounds write when the buffer is full. Affected HHVM versions include: prior to 4.56.3, 4.57.0–4.80.1, 4.81.0–4.93.1...

CVE-2020-1916

An incorrect size calculation in ldapescape may lead to an integer overflow when overly long input is passed in, resulting in an out-of-bounds write. This issue affects HHVM prior to 4.56.2, all versions between 4.57.0 and 4.78.0, 4.79.0, 4.80.0, 4.81.0, 4.82.0, 4.83.0...

Katy Voor HHVM 缓冲区错误漏洞

Katy Voor HHVM is an open source application by Katy Voor. Provides an open source virtual machine designed to execute programs written in Hack. A security vulnerability exists in HHVM that stems from incorrect boundary calculations that could lead to read out-of-bounds. The following products an...

HHVM Multiple Vulnerabilities (Mar 2020)

HHVM is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription scriptoid"1.3.6.1.4.1.25623.1.0.113650...

CVE-2020-1893

Insufficient boundary checks when decoding JSON in TryParse reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between 4.9.0 and 4.32.0 inclusive, and versio...

CVE-2020-1893

Insufficient boundary checks when decoding JSON in TryParse reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between 4.9.0 and 4.32.0 inclusive, and versio...

CVE-2020-1888

Insufficient boundary checks when decoding JSON in handleBackslash reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between 4.9.0 and 4.32.0 inclusive, and...

CVE-2020-1892

Insufficient boundary checks when decoding JSON in JSONparser allows read access to out of bounds memory, potentially leading to information leak and DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between...

CVE-2020-1888

Insufficient boundary checks when decoding JSON in handleBackslash reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between 4.9.0 and 4.32.0 inclusive, and...

CVE-2020-1892

Insufficient boundary checks when decoding JSON in JSONparser allows read access to out of bounds memory, potentially leading to information leak and DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between...

Design/Logic Flaw

Insufficient boundary checks when decoding JSON in TryParse reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between 4.9.0 and 4.32.0 inclusive, and versio...

Design/Logic Flaw

Insufficient boundary checks when decoding JSON in handleBackslash reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between 4.9.0 and 4.32.0 inclusive, and...

CVE-2020-1888

Insufficient boundary checks when decoding JSON in handleBackslash reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between 4.9.0 and 4.32.0 inclusive, and...

CVE-2020-1893

Insufficient boundary checks when decoding JSON in TryParse reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 inclusive, versions between 4.9.0 and 4.32.0 inclusive, and versio...