PT-2019-14264 · Ncurses+1 · Ncurses+1
Published
2018-04-18
·
Updated
2021-08-25
·
CVE-2019-15548
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
ncurses versions through 5.99.0
Description
The issue arises from the mishandling of interaction with C functions, leading to buffer overflows in
instr and mvwinstr. Specifically, ncurses exposes functions from the ncurses library that pass buffers without length to C functions, which may write an arbitrary amount of data, causing a buffer overflow. Additionally, it passes Rust &str to strings expecting C format arguments, allowing hostile input to execute a format string attack, which can write arbitrary data to stack memory, particularly in functions like printw.Recommendations
For versions through 5.99.0, consider disabling the
instr and mvwinstr functions until a patch is available. Restrict access to the printw family of functions to minimize the risk of exploitation. Avoid using the &str parameter in affected functions until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Buffer Overflow
Use of Externally-Controlled Format String
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Related Identifiers
Affected Products
Alt Linux
Ncurses