CVE-ID |
CVE-2017-9047
|
• CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
|
Description |
A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. The variable len is assigned strlen(buf). If the content->type is XML_ELEMENT_CONTENT_ELEMENT, then (i) the content->prefix is appended to buf (if it actually fits) whereupon (ii) content->name is written to the buffer. However, the check for whether the content->name actually fits also uses 'len' rather than the updated buffer length strlen(buf). This allows us to write about "size" many bytes beyond the allocated memory. This vulnerability causes programs that use libxml2, such as PHP, to crash.
|
References |
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
|
|
Assigning CNA |
MITRE Corporation |
Date Record Created |
20170518 |
Disclaimer: The record creation date may reflect when
the CVE ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
|
Phase (Legacy) |
Assigned (20170518) |
Votes (Legacy) |
|
Comments (Legacy) |
|
Proposed (Legacy) |
N/A |
This is a record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities. |
|
For More Information: CVE Request Web Form (select "Other" from dropdown)
|