CVE-2017-7890
php: Buffer over-read from unitialized data in gdImageCreateFromGifCtx function
Severity Score
6.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information.
La función de descodificación de GIF "gdImageCreateFromGifCtx " en gd_gif_in.c en GD Graphics Library (también conocido como libgd),que se usa en PHP en versiones anteriores a la 5.6.31 y en todas las 7.x anteriores a la 7.1.7, no asigna el valor cero a los objetos array colorMap antes de usarse. Una imagen GIF especialmente manipulada podría utilizar las tablas no inicializadas para leer sobre 700 bytes por encima de la pila, pudiendo divulgar información sensible.
A data leak was found in gdImageCreateFromGifCtx() in GD Graphics Library used in PHP before 5.6.31 and 7.1.7. An attacker could craft a malicious GIF image and read up to 762 bytes from stack.
PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. The following packages have been upgraded to a later upstream version: rh-php70-php. Issues addressed include buffer overflow, cross site scripting, denial of service, heap overflow, remote file inclusion, and use-after-free vulnerabilities.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
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
- 2017-04-17 CVE Reserved
- 2017-08-02 CVE Published
- 2024-08-05 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
References (12)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/99492 | Third Party Advisory | |
| https://security.netapp.com/advisory/ntap-20180112-0001 | X_refsource_confirm |
|
| https://www.tenable.com/security/tns-2017-12 | X_refsource_confirm |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://bugs.php.net/bug.php?id=74435 | 2018-05-04 | |
| https://bugs.php.net/patch-display.php?bug=74435&patch=fix-74435-php-7.0&revision=1497970038 | 2018-05-04 |
| URL | Date | SRC |
|---|---|---|
| http://php.net/ChangeLog-5.php | 2018-05-04 | |
| http://php.net/ChangeLog-7.php | 2018-05-04 | |
| http://www.debian.org/security/2017/dsa-3938 | 2018-05-04 | |
| https://access.redhat.com/errata/RHSA-2018:0406 | 2018-05-04 | |
| https://access.redhat.com/errata/RHSA-2018:1296 | 2018-05-04 | |
| https://access.redhat.com/security/cve/CVE-2017-7890 | 2018-05-03 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1473822 | 2018-05-03 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | <= 5.6.30 Search vendor "Php" for product "Php" and version " <= 5.6.30" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.0 Search vendor "Php" for product "Php" and version "7.0.0" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.1 Search vendor "Php" for product "Php" and version "7.0.1" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.2 Search vendor "Php" for product "Php" and version "7.0.2" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.3 Search vendor "Php" for product "Php" and version "7.0.3" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.4 Search vendor "Php" for product "Php" and version "7.0.4" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.5 Search vendor "Php" for product "Php" and version "7.0.5" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.6 Search vendor "Php" for product "Php" and version "7.0.6" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.7 Search vendor "Php" for product "Php" and version "7.0.7" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.8 Search vendor "Php" for product "Php" and version "7.0.8" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.9 Search vendor "Php" for product "Php" and version "7.0.9" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.10 Search vendor "Php" for product "Php" and version "7.0.10" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.11 Search vendor "Php" for product "Php" and version "7.0.11" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.12 Search vendor "Php" for product "Php" and version "7.0.12" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.13 Search vendor "Php" for product "Php" and version "7.0.13" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.14 Search vendor "Php" for product "Php" and version "7.0.14" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.15 Search vendor "Php" for product "Php" and version "7.0.15" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.16 Search vendor "Php" for product "Php" and version "7.0.16" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.17 Search vendor "Php" for product "Php" and version "7.0.17" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.18 Search vendor "Php" for product "Php" and version "7.0.18" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.19 Search vendor "Php" for product "Php" and version "7.0.19" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.0.20 Search vendor "Php" for product "Php" and version "7.0.20" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.0 Search vendor "Php" for product "Php" and version "7.1.0" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.1 Search vendor "Php" for product "Php" and version "7.1.1" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.2 Search vendor "Php" for product "Php" and version "7.1.2" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.3 Search vendor "Php" for product "Php" and version "7.1.3" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.4 Search vendor "Php" for product "Php" and version "7.1.4" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.5 Search vendor "Php" for product "Php" and version "7.1.5" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | 7.1.6 Search vendor "Php" for product "Php" and version "7.1.6" | - |
Affected
| ||||||