CVE-2023-49284

一、漏洞信息
 漏洞编号：[CVE-2023-49284](https://nvd.nist.gov/vuln/detail/CVE-2023-49284)
 漏洞归属组件：[fish](https://gitee.com/src-openeuler/fish)
 漏洞归属的版本：3.3.1,3.6.0
 CVSS V3.0分值：
  BaseScore：6.6 Medium
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H
 漏洞简述：
  fish is a smart and user-friendly command line shell for macOS, Linux, and the rest of the family. fish shell uses certain Unicode non-characters internally for marking wildcards and expansions. It will incorrectly allow these markers to be read on command substitution output, rather than transforming them into a safe internal representation. While this may cause unexpected behavior with direct input (for example, echo  UFDD2HOME has the same output as echo $HOME), this may become a minor security problem if the output is being fed from an external program into a command substitution where this output may not be expected. This design flaw was introduced in very early versions of fish, predating the version control system, and is thought to be present in every version of fish released in the last 15 years or more, although with different characters. Code execution does not appear to be possible, but denial of service (through large brace expansion) or information disclosure (such as variable expansion) is potentially possible under certain circumstances. fish shell 3.6.2 has been released to correct this issue. Users are advised to upgrade. There are no known workarounds for this vulnerability.
 漏洞公开时间：2023-12-05 08:15:08
 漏洞创建时间：2023-12-05 18:33:47
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2023-49284
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| security-advisories.github.com | http://www.openwall.com/lists/oss-security/2023/12/08/1 |  |
| security-advisories.github.com | https://github.com/fish-shell/fish-shell/commit/09986f5563e31e2c900a606438f1d60d008f3a14 |  |
| security-advisories.github.com | https://github.com/fish-shell/fish-shell/security/advisories/GHSA-2j9r-pm96-wp4f |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-49284 | https://bugzilla.suse.com/show_bug.cgi?id=1217808 |
| suse_bugzilla | https://github.com/fish-shell/fish-shell/security/advisories/GHSA-2j9r-pm96-wp4f | https://bugzilla.suse.com/show_bug.cgi?id=1217808 |
| suse_bugzilla | https://github.com/fish-shell/fish-shell/commit/09986f5563e31e2c900a606438f1d60d008f3a14 | https://bugzilla.suse.com/show_bug.cgi?id=1217808 |
| redhat_bugzilla | http://www.openwall.com/lists/oss-security/2023/12/08/1 | https://bugzilla.redhat.com/show_bug.cgi?id=2253972 |
| redhat_bugzilla | https://github.com/fish-shell/fish-shell/commit/09986f5563e31e2c900a606438f1d60d008f3a14 | https://bugzilla.redhat.com/show_bug.cgi?id=2253972 |
| redhat_bugzilla | https://github.com/fish-shell/fish-shell/security/advisories/GHSA-2j9r-pm96-wp4f | https://bugzilla.redhat.com/show_bug.cgi?id=2253972 |
| fish |  | https://github.com//fish-shell/fish-shell/security/advisories/GHSA-2j9r-pm96-wp4f |
| security-advisories.github.com | https://github.com/fish-shell/fish-shell/commit/09986f5563e31e2c900a606438f1d60d008f3a14 |  |
| security-advisories.github.com | https://github.com/fish-shell/fish-shell/security/advisories/GHSA-2j9r-pm96-wp4f |  |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
|  |  | https://github.com/fish-shell/fish-shell/commit/09986f5563e31e2c900a606438f1d60d008f3a14 |  | security-advisories.github.com |
|  |  | https://github.com/fish-shell/fish-shell/commit/09986f5563e31e2c900a606438f1d60d008f3a14 |  | suse_bugzilla |
|  |  | https://github.com/fish-shell/fish-shell/commit/09986f5563e31e2c900a606438f1d60d008f3a14 |  | redhat_bugzilla |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
          fish is a smart and user-friendly command line shell for macOS, Linux, and the rest of the family. fish shell uses certain Unicode non-characters internally for marking wildcards and expansions. It will incorrectly allow these markers to be read on command substitution output, rather than transforming them into a safe internal representation. While this may cause unexpected behavior with direct input (for example, echo UFDD2HOME has the same output as echo $HOME), this may become a minor security problem if the output is being fed from an external program into a command substitution where this output may not be expected. This design flaw was introduced in very early versions of fish, predating the version control system, and is thought to be present in every version of fish released in the last 15 years or more, although with different characters. Code execution does not appear to be possible, but denial of service (through large brace expansion) or information disclosure (such as variable expansion) is potentially possible under certain circumstances. fish shell 3.6.2 has been released to correct this issue. Users are advised to upgrade. There are no known workarounds for this vulnerability.    
 openEuler评分：
  6.6
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP1(3.3.1):受影响
2.openEuler-20.03-LTS-SP3(3.3.1):受影响
3.openEuler-20.03-LTS-SP4:受影响
4.openEuler-22.03-LTS(3.3.1):受影响
5.openEuler-22.03-LTS-SP1(3.3.1):受影响
6.openEuler-22.03-LTS-SP2(3.3.1):受影响
7.openEuler-22.03-LTS-SP3:受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(3.3.1):否
2.openEuler-20.03-LTS-SP3(3.3.1):否
3.openEuler-20.03-LTS-SP4:否
4.openEuler-22.03-LTS(3.3.1):否
5.openEuler-22.03-LTS-SP1(3.3.1):否
6.openEuler-22.03-LTS-SP2(3.3.1):否
7.openEuler-22.03-LTS-SP3:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2023-1940

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