curl before version 7.52.0 is vulnerable to a buffer overflow when doing a large floating point output in libcurl's implementation of the printf() functions. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks.
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2018:3558 | vendor advisory |
| https://lists.debian.org/debian-lts-announce/2018/11/msg00005.html | mailing list |
| https://curl.haxx.se/docs/adv_20161221A.html | vendor advisory |
| https://github.com/curl/curl/commit/curl-7_51_0-162-g3ab3c16 | third party advisory patch |
| http://www.securitytracker.com/id/1037515 | vdb entry third party advisory |
| http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html | |
| http://www.securityfocus.com/bid/95019 | vdb entry third party advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9586 | issue tracking third party advisory |
| https://security.gentoo.org/glsa/201701-47 | third party advisory vendor advisory |
| https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E | mailing list |
| https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E | mailing list |