CVE-2015-7942
libxml2: heap-based buffer overflow in xmlParseConditionalSections()
Severity Score
6.8
*CVSS v2
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
2
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The xmlParseConditionalSections function in parser.c in libxml2 does not properly skip intermediary entities when it stops parsing invalid input, which allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via crafted XML data, a different vulnerability than CVE-2015-7941.
La función xmlParseConditionalSections en parser.c en libxml2 no omite adecuadamente las entidades intermediarias cuando se detiene el análisis de entrada no válida, lo que permite a atacantes dependientes del contexto causar una denegación de servicio (lectura fuera de rango y caída) a través de datos XML manipulados, una vulnerabilidad diferente a CVE-2015-7941.
A heap-based buffer overflow flaw was found in the way libxml2 parsed certain crafted XML input. A remote attacker could provide a specially crafted XML file that, when opened in an application linked against libxml2, would cause the application to crash causing a denial of service.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2015-10-22 CVE Reserved
- 2015-11-17 CVE Published
- 2023-07-06 EPSS Updated
- 2024-08-06 CVE Updated
- 2024-08-06 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-122: Heap-based Buffer Overflow
CAPEC
References (31)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2015/10/22/5 | Mailing List |
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| http://www.openwall.com/lists/oss-security/2015/10/22/8 | Mailing List |
|
| http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html | X_refsource_confirm |
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| http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html | X_refsource_confirm |
|
| http://www.securityfocus.com/bid/79507 | Vdb Entry | |
| http://www.securitytracker.com/id/1034243 | Vdb Entry | |
| http://xmlsoft.org/news.html | X_refsource_confirm | |
| https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04944172 | Third Party Advisory |
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.gnome.org/show_bug.cgi?id=744980#c8 | 2024-08-06 | |
| https://bugzilla.gnome.org/show_bug.cgi?id=756456 | 2024-08-06 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Hp Search vendor "Hp" | Icewall Federation Agent Search vendor "Hp" for product "Icewall Federation Agent" | 3.0 Search vendor "Hp" for product "Icewall Federation Agent" and version "3.0" | - |
Affected
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| Hp Search vendor "Hp" | Icewall File Manager Search vendor "Hp" for product "Icewall File Manager" | 3.0 Search vendor "Hp" for product "Icewall File Manager" and version "3.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
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| Apple Search vendor "Apple" | Iphone Os Search vendor "Apple" for product "Iphone Os" | <= 9.2.1 Search vendor "Apple" for product "Iphone Os" and version " <= 9.2.1" | - |
Affected
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| Apple Search vendor "Apple" | Mac Os X Search vendor "Apple" for product "Mac Os X" | <= 10.11.3 Search vendor "Apple" for product "Mac Os X" and version " <= 10.11.3" | - |
Affected
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| Apple Search vendor "Apple" | Tvos Search vendor "Apple" for product "Tvos" | <= 9.1 Search vendor "Apple" for product "Tvos" and version " <= 9.1" | - |
Affected
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| Apple Search vendor "Apple" | Watchos Search vendor "Apple" for product "Watchos" | <= 2.1 Search vendor "Apple" for product "Watchos" and version " <= 2.1" | - |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 15.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.04" | - |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 15.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.10" | - |
Affected
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| Xmlsoft Search vendor "Xmlsoft" | Libxml2 Search vendor "Xmlsoft" for product "Libxml2" | 2.9.2 Search vendor "Xmlsoft" for product "Libxml2" and version "2.9.2" | - |
Affected
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