CVE-2017-9048: Buffer Overflow
First published: Thu May 18 2017(Updated: )
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. At the end of the routine, the function may strcat two more characters without checking whether the current strlen(buf) + 2 < size. This vulnerability causes programs that use libxml2, such as PHP, to crash.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/libxml2 | 2.9.4+dfsg1-7+deb10u4 2.9.4+dfsg1-7+deb10u6 2.9.10+dfsg-6.7+deb11u4 2.9.14+dfsg-1.3~deb12u1 2.9.14+dfsg-1.3 | |
| debian/libxml2 | <=2.9.1+dfsg1-5<=2.9.4+dfsg1-2.2 | 2.9.4+dfsg1-3.1 2.9.4+dfsg1-2.2+deb9u1 2.9.1+dfsg1-5+deb8u5 |
| libxml2-devel | =2.9.4 |
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Reference Links
- https://bugzilla.gnome.org/show_bug.cgi?id=781701
- https://www.openwall.com/lists/oss-security/2017/05/15/1
- https://gitlab.gnome.org/GNOME/libxml2/-/commit/932cc9896ab41475d4aa429c27d9afd175959d74
- https://security-tracker.debian.org/tracker/CVE-2017-9048
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9048
- http://www.openwall.com/lists/oss-security/2017/05/15/1
- https://mapreri.org
- https://launchpad.net/~mapreri
- https://qa.debian.org/developer.php?login=mattia
- https://security-tracker.debian.org/tracker/CVE-2017-7376
- https://security-tracker.debian.org/tracker/CVE-2017-7375
- https://security-tracker.debian.org/tracker/CVE-2017-9049
- https://security-tracker.debian.org/tracker/CVE-2017-9050
- https://security-tracker.debian.org/tracker/CVE-2017-9047
- https://security-tracker.debian.org/tracker/CVE-2017-0663
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863021
- http://www.debian.org/security/2017/dsa-3952
- http://www.securityfocus.com/bid/98556
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
- https://security.gentoo.org/glsa/201711-01
Frequently Asked Questions
What is the severity of CVE-2017-9048?
CVE-2017-9048 is classified as a critical vulnerability due to the potential for a stack-based buffer overflow leading to remote code execution.
How do I fix CVE-2017-9048?
To fix CVE-2017-9048, update libxml2 to versions 2.9.4+dfsg1-7+deb10u4 or later for Debian systems.
What systems are affected by CVE-2017-9048?
CVE-2017-9048 affects libxml2 versions prior to 2.9.4 and may impact various Debian-based systems.
What is the impact of CVE-2017-9048 exploitation?
Exploitation of CVE-2017-9048 can allow attackers to execute arbitrary code, potentially compromising the affected system.
Is CVE-2017-9048 a widely known vulnerability?
Yes, CVE-2017-9048 is a well-documented vulnerability that has been reported and discussed in various security advisories.
- collector/security-tracker-debian
- collector/debian-bugs
- alias/CVE-2017-9048
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/event
- agent/weakness
- agent/author
- agent/references
- agent/remedy
- agent/severity
- agent/description
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- package-manager/debian
- vendor/xmlsoft
- canonical/libxml2-devel
- version/libxml2-devel/2.9.4