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cve[email protected]CVE-2017-15710
HistoryMar 26, 2018 - 3:29 p.m.

CVE-2017-15710

2018-03-2615:29:00
CWE-787
[email protected]
web.nvd.nist.gov
2606
4
apache
httpd
mod_authnz_ldap
cve-2017-15710
security
vulnerability
nvd

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5 High

AI Score

Confidence

High

0.026 Low

EPSS

Percentile

90.5%

JSON

In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user’s credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, ‘en-US’ is truncated to ‘en’). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all.

Affected configurations

Vulners
NVD
Node
apacheapache_http_serverRange2.0.23–2.0.65
OR
apacheapache_http_serverRange2.2.0–2.2.34
OR
apacheapache_http_serverRange2.4.0–2.4.29

CNA Affected

[
  {
    "product": "Apache HTTP Server",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "status": "affected",
        "version": "2.0.23 to 2.0.65"
      },
      {
        "status": "affected",
        "version": "2.2.0 to 2.2.34"
      },
      {
        "status": "affected",
        "version": "2.4.0 to 2.4.29"
      }
    ]
  }
]

References

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5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

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Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

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CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

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NONE

Integrity Impact

NONE

Availability Impact

HIGH

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7.5 High

AI Score

Confidence

High

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EPSS

Percentile

90.5%

JSON
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