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一、漏洞信息
漏洞编号：CVE-2021-3517
漏洞归属组件：libxml2
漏洞归属的版本：2.9.10,2.9.8,2.9.9
CVSS V3.0分值：
BaseScore：8.6 High
Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
漏洞简述：
There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.
漏洞公开时间：2021-05-19 22:15
漏洞创建时间：2021-05-26 13:30:46
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2021-3517
漏洞分析指导链接：
https://gitee.com/opengauss/security/blob/master/cve/manual.md
二、漏洞分析结构反馈
影响性分析说明：
A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.
openGauss评分：
6.5
Vector：CVSS：3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
受影响版本排查(受影响/不受影响)：
1.2.0.0:受影响
2.master:受影响
@buter ,@郭亮 ,@lijianfeng ,@朱金伟
issue处理注意事项:
1. 当前issue受影响的分支提交pr时, 须在pr描述中填写当前issue编号进行关联, 否则无法关闭当前issue;
2. 模板内容需要填写完整, 无论是受影响或者不受影响都需要填写完整内容,未引入的分支不需要填写, 否则无法关闭当前issue;
3. 以下为模板中需要填写完整的内容, 请复制到评论区回复, 注: 内容的标题名称(影响性分析说明, openGauss评分, 受影响版本排查(受影响/不受影响))不能省略,省略后cve-manager将无法正常解析填写内容.
影响性分析说明:
openGauss评分: (评分和向量)
受影响版本排查(受影响/不受影响):
1.2.0.0:
2.1.1.0:
3.1.0.1:
4.1.0.0:
issue处理具体操作请参考:
https://gitee.com/opengauss/security/blob/master/cve/manual.md
pr关联issue具体操作请参考:
https://gitee.com/help/articles/4142
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Hey @opengauss-bot, Welcome to openGauss Community.
All of the projects in openGauss Community are maintained by @opengauss-bot.
That means the developers can comment below every pull request or issue to trigger Bot Commands.
Please follow instructions at https://gitee.com/opengauss/community/blob/master/contributors/command.en.md to find the details.
jianfenglee 请完成以下操作:
| 状态 | 需分析 | 内容 |
|---|---|---|
| 待分析 | 影响性分析说明 | 影响性分析说明 没有填写或按正确格式填写 |
| 待分析 | openGaussScore | openGaussScore没有填写或正确填写(0-10) |
| 待分析 | openGaussVector | openGaussVector没有正确填写 |
| 待分析 | 受影响版本排查 | 受影响版本排查(受影响/不受影响): 没有分析或未按正确格式填写:2.0.0:,1.1.0:,1.0.1:,1.0.0: |
请确认分析内容的准确性,待分析内容请填写完整,否则将无法关闭当前issue.
影响性分析说明:
There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.
openGauss评分: (评分和向量)
BaseScore：8.6 High
Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
受影响版本排查(受影响/不受影响):
1.2.0.0:受影响
2.master:受影响
@lijianfeng 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态 | 需分析 | 内容 |
|---|---|---|
| 已分析 | 影响性分析说明 | There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application. |
| 已分析 | openGaussScore | 8.6 |
| 已分析 | openGaussVector | AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |
| 已分析 | 受影响版本排查 | 2.0.0:受影响,master:受影响 |
请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.
/approve
@lijianfeng
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I3T027:CVE-2021-3517
受影响分支: 2.0.0
具体操作参考: https://gitee.com/help/articles/4142
@lijianfeng
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I3T027:CVE-2021-3517
受影响分支: 2.0.0
具体操作参考: https://gitee.com/help/articles/4142
/approve
@zhangxubo maintainer具有通过(/approve或者/close)关闭issue, 否则请通过issue页面按钮关闭issue!
/close
@zhangxubo maintainer具有通过(/approve或者/close)关闭issue, 否则请通过issue页面按钮关闭issue!
this issue is closed by: @zhangxubo.
/approve
@zhangxubo maintainer具有通过(/approve或者/close)关闭issue, 否则请通过issue页面按钮关闭issue!
@lijianfeng
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I3T027:CVE-2021-3517
受影响分支: 2.0.0
具体操作参考: https://gitee.com/help/articles/4142
@lijianfeng
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I3T027:CVE-2021-3517
受影响分支: 2.0.0
具体操作参考: https://gitee.com/help/articles/4142
@lijianfeng
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I3T027:CVE-2021-3517
受影响分支: 2.0.0
具体操作参考: https://gitee.com/help/articles/4142
/approve
@buter 你已审核模板内容, cve-manager 将关闭issue!
影响性分析说明:
There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.
openGauss评分: (评分和向量)
BaseScore：8.6 High
Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
受影响版本排查(受影响/不受影响):
1.2.0.0:受影响
2.master:受影响
@lijianfeng 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态 | 需分析 | 内容 |
|---|---|---|
| 已分析 | 影响性分析说明 | There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application. |
| 已分析 | openGaussScore | 8.6 |
| 已分析 | openGaussVector | AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |
| 已分析 | 受影响版本排查 | 2.0.0:受影响,master:受影响 |
请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.
/close
this issue is closed by: @zhangxubo.
@zhangxubo maintainer具有通过(/approve或者/close)关闭issue, 否则请通过issue页面按钮关闭issue!
影响性分析说明:
A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.
openGauss评分: (评分和向量)
BaseScore：6.5 Medium
Vector：CVSS：3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
受影响版本排查(受影响/不受影响):
1.2.0.0:受影响
2.master:受影响
@lijianfeng 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态 | 需分析 | 内容 |
|---|---|---|
| 已分析 | 影响性分析说明 | A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service. |
| 已分析 | openGaussScore | 6.5 |
| 已分析 | openGaussVector | AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 已分析 | 受影响版本排查 | 2.0.0:受影响,master:受影响 |
请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.
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